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MinIO Client Complete Guide Slack

MinIO Client (mc) provides a modern alternative to UNIX commands like ls, cat, cp, mirror, diff etc. It supports filesystems and Amazon S3 compatible cloud storage service (AWS Signature v2 and v4).

alias       set, remove and list aliases in configuration file
ls          list buckets and objects
mb          make a bucket
rb          remove a bucket
cp          copy objects
mirror      synchronize object(s) to a remote site
cat         display object contents
head        display first 'n' lines of an object
pipe        stream STDIN to an object
share       generate URL for temporary access to an object
find        search for objects
sql         run sql queries on objects
stat        show object metadata
mv          move objects
tree        list buckets and objects in a tree format
du          summarize disk usage recursively
retention   set retention for object(s) and bucket(s)
legalhold   set legal hold for object(s)
diff        list differences in object name, size, and date between two buckets
rm          remove objects
version     manage bucket versioning
ilm         manage bucket lifecycle
encrypt     manage bucket encryption config
event       manage object notifications
watch       listen for object notification events
undo        undo PUT/DELETE operations
policy      manage anonymous access to buckets and objects
tag         manage tags for bucket(s) and object(s)
replicate   configure server side bucket replication
admin       manage MinIO servers
update      update mc to latest release
support     supportability tools like  profile, register, callhome, inspect
ping        perform liveness check

1. Download MinIO Client

Docker Stable

docker pull minio/mc
docker run minio/mc ls play

Docker Edge

docker pull minio/mc:edge
docker run minio/mc:edge ls play

Note: Above examples run mc against MinIO play environment by default. To run mc against other S3 compatible servers, start the container this way:

docker run -it --entrypoint=/bin/sh minio/mc

then use the mc alias command.

Homebrew (macOS)

Install mc packages using Homebrew

brew install minio/stable/mc
mc --help

Binary Download (GNU/Linux)

Platform Architecture URL
GNU/Linux 64-bit Intel https://dl.min.io/client/mc/release/linux-amd64/mc
64-bit PPC https://dl.min.io/client/mc/release/linux-ppc64le/mc
chmod +x mc
./mc --help

Binary Download (Microsoft Windows)

Platform Architecture URL
Microsoft Windows 64-bit Intel https://dl.min.io/client/mc/release/windows-amd64/mc.exe
mc.exe --help

Install from Source

Source installation is intended only for developers and advanced users. mc update command does not support update notifications for source based installations. Please download official releases from https://min.io/download/#minio-client.

If you do not have a working Golang environment, please follow How to install Golang.

go get -d github.com/minio/mc
cd ${GOPATH}/src/github.com/minio/mc
make

2. Run MinIO Client

GNU/Linux

chmod +x mc
./mc --help

macOS

chmod 755 mc
./mc --help

Microsoft Windows

mc.exe --help

3. Add a Cloud Storage Service

Note: If you are planning to use mc only on POSIX compatible filesystems, you may skip this step and proceed to Step 4.

To add one or more Amazon S3 compatible hosts, please follow the instructions below. mc stores all its configuration information in ~/.mc/config.json file.

Usage

mc alias set <ALIAS> <YOUR-S3-ENDPOINT> [YOUR-ACCESS-KEY] [YOUR-SECRET-KEY] [--api API-SIGNATURE]

Keys must be supplied by argument or standard input.

Alias is simply a short name to your cloud storage service. S3 end-point, access and secret keys are supplied by your cloud storage provider. API signature is an optional argument. By default, it is set to "S3v4".

Example - MinIO Cloud Storage

MinIO server displays URL, access and secret keys.

mc alias set minio http://192.168.1.51 BKIKJAA5BMMU2RHO6IBB V7f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12 --api S3v4

Example - Amazon S3 Cloud Storage

Get your AccessKeyID and SecretAccessKey by following AWS Credentials Guide.

mc alias set s3 https://s3.amazonaws.com BKIKJAA5BMMU2RHO6IBB V7f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12 --api S3v4

Example - Google Cloud Storage

Get your AccessKeyID and SecretAccessKey by following Google Credentials Guide

mc alias set gcs  https://storage.googleapis.com BKIKJAA5BMMU2RHO6IBB V8f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12

Example - IBM Cloud Object Storage

Get your AccessKeyID and SecretAccessKey by creating a service account with HMAC credentials. This option is only available from Resources > Cloud Object Storage > Service credentials (not from Manage > Access (IAM) > Service IDs). Once created, the values you will use for accessKey and secretKey are found in the cos_hmac_keys field of the service credentials.

Finally, the url will be the public endpoint specific to the region/resiliency that you chose when setting up your bucket. There is no single, global url for all buckets. Find your bucket's URL in the console by going to Cloud Object Storage > Buckets > [your-bucket] > Configuration > Endpoints > public. Remember to prepend https:// to the URL provided.

mc alias set ibm https://s3.us-east.cloud-object-storage.appdomain.cloud BKIKJAA5BMMU2RHO6IBB V8f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12 --api s3v4

Note: The service ID you create must have an access policy granting it access to your Object Storage instance(s).

Example - Specify keys using standard input

Prompt

mc alias set minio http://192.168.1.51 --api S3v4
Enter Access Key: BKIKJAA5BMMU2RHO6IBB
Enter Secret Key: V7f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12

Pipe from STDIN

echo -e "BKIKJAA5BMMU2RHO6IBB\nV7f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12" | \
mc alias set minio http://192.168.1.51 --api S3v4

Specify temporary host configuration through environment variable

Static credentials

export MC_HOST_<alias>=https://<Access Key>:<Secret Key>@<YOUR-S3-ENDPOINT>

Example:

export MC_HOST_myalias=https://Q3AM3UQ867SPQQA43P2F:[email protected]
mc ls myalias

Rotating credentials

export MC_HOST_<alias>=https://<Access Key>:<Secret Key>:<Session Token>@<YOUR-S3-ENDPOINT>

Example:

export MC_HOST_myalias=https://Q3AM3UQ867SPQQA43P2F:zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG:eyJhbGciOiJIUzUxMiIsInR5cCI6IkpXVCJ9.eyJhY2Nlc3NLZXkiOiJOVUlCT1JaWVRWMkhHMkJNUlNYUiIsImF1ZCI6IlBvRWdYUDZ1Vk80NUlzRU5SbmdEWGo1QXU1WWEiLCJhenAiOiJQb0VnWFA2dVZPNDVJc0VOUm5nRFhqNUF1NVlhIiwiZXhwIjoxNTM0ODk2NjI5LCJpYXQiOjE1MzQ4OTMwMjksImlzcyI6Imh0dHBzOi8vbG9jYWxob3N0Ojk0NDMvb2F1dGgyL3Rva2VuIiwianRpIjoiNjY2OTZjZTctN2U1Ny00ZjU5LWI0MWQtM2E1YTMzZGZiNjA4In0.eJONnVaSVHypiXKEARSMnSKgr-2mlC2Sr4fEGJitLcJF_at3LeNdTHv0_oHsv6ZZA3zueVGgFlVXMlREgr9LXA@play.min.io
mc ls myalias

4. Test Your Setup

mc is pre-configured with https://play.min.io, aliased as "play". It is a hosted MinIO server for testing and development purpose. To test Amazon S3, simply replace "play" with "s3" or the alias you used at the time of setup.

Example:

List all buckets from https://play.min.io

mc ls play
[2016-03-22 19:47:48 PDT]     0B my-bucketname/
[2016-03-22 22:01:07 PDT]     0B mytestbucket/
[2016-03-22 20:04:39 PDT]     0B mybucketname/
[2016-01-28 17:23:11 PST]     0B newbucket/
[2016-03-20 09:08:36 PDT]     0B s3git-test/

5. Everyday Use

You may add shell aliases to override your common Unix tools.

alias ls='mc ls'
alias cp='mc cp'
alias cat='mc cat'
alias mkdir='mc mb'
alias pipe='mc pipe'
alias find='mc find'
alias tree='mc tree'

6. Global Options

Option [--autocompletion]

Install auto-completion for your shell.

Option [--debug]

Debug option enables debug output to console.

Example: Display verbose debug output for ls command.

mc --debug ls play
mc: <DEBUG> GET / HTTP/1.1
Host: play.min.io
User-Agent: MinIO (darwin; amd64) minio-go/1.0.1 mc/2016-04-01T00:22:11Z
Authorization: AWS4-HMAC-SHA256 Credential=**REDACTED**/20160408/us-east-1/s3/aws4_request, SignedHeaders=expect;host;x-amz-content-sha256;x-amz-date, Signature=**REDACTED**
Expect: 100-continue
X-Amz-Content-Sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
X-Amz-Date: 20160408T145236Z
Accept-Encoding: gzip

mc: <DEBUG> HTTP/1.1 200 OK
Transfer-Encoding: chunked
Accept-Ranges: bytes
Content-Type: text/xml; charset=utf-8
Date: Fri, 08 Apr 2016 14:54:55 GMT
Server: MinIO/DEVELOPMENT.2016-04-07T18-53-27Z (linux; amd64)
Vary: Origin
X-Amz-Request-Id: HP30I0W2U49BDBIO

mc: <DEBUG> Response Time:  1.220112837s

[...]

[2016-04-08 03:56:14 IST]     0B albums/
[2016-04-04 16:11:45 IST]     0B backup/
[2016-04-01 20:10:53 IST]     0B deebucket/
[2016-03-28 21:53:49 IST]     0B guestbucket/

Option [--json]

JSON option enables parseable output in JSON lines, also called as NDJSON format.

Example: List all buckets from MinIO play service.

mc --json ls play
{"status":"success","type":"folder","lastModified":"2016-04-08T03:56:14.577+05:30","size":0,"key":"albums/"}
{"status":"success","type":"folder","lastModified":"2016-04-04T16:11:45.349+05:30","size":0,"key":"backup/"}
{"status":"success","type":"folder","lastModified":"2016-04-01T20:10:53.941+05:30","size":0,"key":"deebucket/"}
{"status":"success","type":"folder","lastModified":"2016-03-28T21:53:49.217+05:30","size":0,"key":"guestbucket/"}

Option [--no-color]

This option disables the color theme. It is useful for dumb terminals.

Option [--quiet]

Quiet option suppress chatty console output.

Option [--config-dir]

Use this option to set a custom config path.

Option [ --insecure]

Skip SSL certificate verification.

Option [--version]

Display the current version of mc installed

Example: Print version of mc.

mc --version
mc version RELEASE.2020-04-25T00-43-23Z

7. Commands

ls - list buckets and objects tree - list buckets and objects in a tree format mb - make a bucket cat - display object contents
cp - copy objects rb - remove a bucket pipe - stream STDIN to an object version - manage bucket version
share - generate URL for temporary access to an object rm - remove objects find - find files and objects undo - undo PUT/DELETE operations
diff - list differences in object name, size, and date between two buckets mirror - synchronize object(s) to a remote site ilm - manage bucket lifecycle policies replicate - manage bucket server side replication
alias - manage aliases policy - set public policy on bucket or prefix event - manage events on your buckets encrypt - manage bucket encryption
update - manage software updates watch - watch for events retention - set retention for object(s) sql - run sql queries on objects
head - display first 'n' lines of an object stat - stat contents of objects and folders legalhold - set legal hold for object(s) mv - move objects
du - summarize disk usage recursively tag - manage tags for bucket and object(s) admin - manage MinIO servers support - generate profile data for debugging purposes
ping - perform liveness check

Command ls

ls command lists files, buckets and objects. Use --incomplete flag to list partially copied content.

USAGE:
   mc ls [FLAGS] TARGET [TARGET ...]

FLAGS:
  --rewind value                list all object versions no later than specified date
  --versions                    list all versions
  --recursive, -r               list recursively
  --incomplete, -I              list incomplete uploads
  --help, -h                    show help

Example: List all buckets on https://play.min.io.

mc ls play
[2016-04-08 03:56:14 IST]     0B albums/
[2016-04-04 16:11:45 IST]     0B backup/
[2016-04-01 20:10:53 IST]     0B deebucket/
[2016-03-28 21:53:49 IST]     0B guestbucket/
[2016-04-08 20:58:18 IST]     0B mybucket/

Example: List all contents versions if the bucket versioning is enabled

mc ls --versions s3/mybucket
[2020-09-21 16:25:31 CET] 903KiB UiL4wSZS2OkST5aJ3AFAwtzZxHTW_9VC v1 PUT foo
[2020-09-18 21:18:44 CET]     0B sK4pldVmOJqCJzX2aJvxX4eWMnuqazs9 v1 DEL bar

Example: List contents created earlier than 3 days

mc ls --rewind 3d s3/mybucket
[2020-09-18 21:18:44 CET]     0B sK4pldVmOJqCJzX2aJvxX4eWMnuqazs9 v1 DEL bar

Command tree

tree command lists buckets and directories in a tree format. Use --files flag to include files/objects in listing.

USAGE:
   mc tree [FLAGS] TARGET [TARGET ...]

FLAGS:
  --help, -h                    show help
  --files, -f                   include files in tree
  --depth, -d                   set the maximum depth of the tree
  --rewind value                display tree no later than specified date

Example: List all contents on play/test-bucket in a tree format.

mc tree play/test-bucket
play/test-bucket/
├─ dir_a
├─ dir_b
│  └─ dir_bb
└─ dir_x
   └─ dir_xx

Example: List all objects with the state of 3 days earlier

mc tree --files --rewind 3d play/test-bucket
play/test-bucket/
├─ object1
└─ object2

Command mb

mb command creates a new bucket on an object storage. On a filesystem, it behaves like mkdir -p command. Bucket is equivalent of a drive or mount point in filesystems and should not be treated as folders. MinIO does not place any limits on the number of buckets created per user. On Amazon S3, each account is limited to 100 buckets. Please refer to Buckets Restrictions and Limitations on S3 for more information.

USAGE:
   mc mb [FLAGS] TARGET [TARGET...]

FLAGS:
  --region value                specify bucket region; defaults to 'us-east-1' (default: "us-east-1")
  --ignore-existing, -p         ignore if bucket/directory already exists
  --with-lock, -l               enable object lock
  --help, -h                    show help

Example: Create a new bucket named "mybucket" on https://play.min.io.

mc mb play/mybucket
Bucket created successfully ‘play/mybucket’.

Example: Create a new bucket named "mybucket" on https://s3.amazonaws.com.

mc mb s3/mybucket --region=us-west-1
Bucket created successfully ‘s3/mybucket’.

Command rb

rb command removes a bucket and all its contents on an object storage. On a filesystem, it behaves like rmdir command.

NOTE: When a bucket is removed all bucket configurations associated with the bucket will also be removed. All objects and their versions will be removed as well. If you need to preserve bucket and its configuration - only empty the objects and versions in a bucket use mc rm instead.

USAGE:
   mc rb [FLAGS] TARGET [TARGET...]

FLAGS:
  --force                       force a recursive remove operation on all object versions
  --dangerous                   allow site-wide removal of objects
  --help, -h                    show help

Example: Remove a bucket named "mybucket" on https://play.min.io.

mc rb play/mybucket --force
Bucket removed successfully ‘play/mybucket’.

Command du

du command summarizes disk usage recursively

USAGE:
   mc du [FLAGS] TARGET
FLAGS:
  --depth value, -d value       print the total for a folder prefix only if it is N or fewer levels below the command line argument (default: 0)
  --recursive, -r               recursively print the total for a folder prefix
  --rewind value                include all object versions no later than specified date
  --versions                    include all object versions
  --encrypt-key value           encrypt/decrypt objects (using server-side encryption with customer provided keys)
  --help, -h                    show help

Example: Summarize disk usage of 'jazz-songs' bucket recursively.

mc du s3/jazz-songs

Example: Summarize disk usage of 'jazz-songs' bucket with all objects versions

mc du --versions s3/jazz-songs/

Command cat

cat command concatenates contents of a file or object to another. You may also use it to simply display the contents to stdout

USAGE:
   mc cat [FLAGS] SOURCE [SOURCE...]

FLAGS:
  --rewind value                   display an earlier object version
  --version-id value, --vid value  display a specific version of an object
  --encrypt-key value              encrypt/decrypt objects (using server-side encryption with customer provided keys)
  --help, -h                       show help

ENVIRONMENT VARIABLES:
   MC_ENCRYPT_KEY:  list of comma delimited prefix=secret values

Example: Display the contents of a text file myobject.txt

mc cat play/mybucket/myobject.txt
Hello MinIO!!

Example: Display the contents of a server encrypted object myencryptedobject.txt

mc cat --encrypt-key "play/mybucket=32byteslongsecretkeymustbegiven1" play/mybucket/myencryptedobject.txt
Hello MinIO!!

Example: Display the contents of a server encrypted object myencryptedobject.txt. Pass base64 encoded string if encryption key contains non-printable character like tab

mc cat --encrypt-key "play/mybucket=MzJieXRlc2xvbmdzZWNyZWFiY2RlZmcJZ2l2ZW5uMjE=" play/mybucket/myencryptedobject.txt
Hello MinIO!!

Example: Display the content of an object 10 days earlier

mc cat --rewind "10d" play/mybucket/myobject
Hello MinIO ten days earlier!

Example: Display the content of an object at a specific date/time in the past

mc cat --rewind "2020.03.24T10:00" play/mybucket/myobject
Hello MinIO from the past!

Command sql

sql run sql queries on objects.

USAGE:
  mc sql [FLAGS] TARGET [TARGET...]

FLAGS:
  --query value, -e value       sql query expression
  --recursive, -r               sql query recursively
  --csv-input value             csv input serialization option
  --json-input value            json input serialization option
  --compression value           input compression type
  --csv-output value            csv output serialization option
  --json-output value           json output serialization option
  --encrypt-key value           encrypt/decrypt objects (using server-side encryption with customer provided keys)
  --help, -h                    show help

ENVIRONMENT VARIABLES:
   MC_ENCRYPT_KEY:  list of comma delimited prefix=secret values

INPUT SERIALIZATION
  --csv-input or --json-input can be used to specify input data format. Format is
  specified by a string with pattern "key=value,..." for valid key(s).

  DATA FORMAT:
    csv: Use --csv-input flag
      Valid keys:
        RecordDelimiter (rd)
        FieldDelimiter (fd)
        QuoteChar (qc)
        QuoteEscChar (qec)
        FileHeader (fh)
        Comments (cc)
        QuotedRecordDelimiter (qrd)

    json: Use --json-input flag
      Valid keys:
        Type
    parquet: If object name ends in .parquet, this is automatically interpreted.

OUTPUT SERIALIZATION
  --csv-output or --json-output can be used to specify output data format. Format is
  specified by a string with pattern "key=value,..." for valid key(s).
  DATA FORMAT:
    csv: Use --csv-output flag
      Valid keys:
        RecordDelimiter (rd)
        FieldDelimiter (fd)
        QuoteChar (qc)
        QuoteEscChar (qec)
        QuoteFields (qf)

    json: Use --json-output flag
      Valid keys:
        RecordDelimiter (rd)

COMPRESSION TYPE
    --compression specifies if the queried object is compressed.
    Valid values: NONE | GZIP | BZIP2

Example: Select all columns on a set of objects recursively on AWS S3

mc sql --recursive --query "select * from S3Object" s3/personalbucket/my-large-csvs/

Example: Run an aggregation query on an object on MinIO

mc sql --query "select count(s.power) from S3Object" myminio/iot-devices/power-ratio.csv

Example: Run an aggregation query on an encrypted object with customer provided keys

mc sql --encrypt-key "myminio/iot-devices=32byteslongsecretkeymustbegiven1" \
    --query "select count(s.power) from S3Object" myminio/iot-devices/power-ratio-encrypted.csv

For more query examples refer to official AWS S3 documentation here

Command head

head display first 'n' lines of an object

USAGE:
   mc head [FLAGS] SOURCE [SOURCE...]

FLAGS:
  -n value, --lines value       print the first 'n' lines (default: 10)
  --encrypt-key value           encrypt/decrypt objects (using server-side encryption with customer provided keys)
  --help, -h                    show help

ENVIRONMENT VARIABLES:
   MC_ENCRYPT_KEY:  list of comma delimited prefix=secret values

Example: Display the first line of a text file myobject.txt

mc head -n 1 play/mybucket/myobject.txt
Hello!!

Example: Display the first line of a server encrypted object myencryptedobject.txt

mc head -n 1 --encrypt-key "play/mybucket=32byteslongsecretkeymustbegiven1" play/mybucket/myencryptedobject.txt
Hello!!

Example: Display the first line of the content of an object, 1 year earlier

mc head -n 1 --rewind 365d play/mybucket/myencryptedobject.txt
Hello!!

Command lock

lock sets and gets object lock configuration

RELEASE.2020-09-18T00-13-21Z deprecates and removes the lock command. The retention command fully replaces lock functionality.

Command retention

retention sets object retention for objects with a given prefix or the default retention settings for a bucket.

USAGE:
   mc retention COMMAND [FLAGS | -h] [ARGUMENTS...]

COMMANDS:
  set           Sets retention for object(s) or bucket
  clear         Clears retention for object(s) or bucket
  info          Returns retention for object(s) or bucket
  help, h       Shows a list of commands or help for one command

FLAGS:
  --bypass                      bypass governance
  --recursive, -r               apply retention recursively
  --json                        enable JSON formatted output
  --help, -h                    show help

Example: Set governance for 30 days for object prefix on bucket mybucket

mc retention set governance 30d myminio/mybucket/prefix -r
Object retention successfully set for objects with prefix `myminio/mybucket/prefix`.

Objects created with prefix prefix in the above bucket mybucket cannot be deleted until the compliance period is over

mc cp ~/comp.csv myminio/mybucket/prefix/
mc rm myminio/mybucket/prefix/comp.csv
Removing `myminio/mybucket/prefix/comp.csv`.

This creates delete marker (soft delete) you will be able to check if your objects still exist with

mc ls --versions myminio/mybucket/prefix/comp.csv

Example: Set compliance for 30 days as default retention setting on bucket mybucket

mc retention set --default compliance 30d myminio/mybucket

Objects created in the above bucket mybucket cannot be deleted until the compliance period is over

mc cp ~/comp.csv myminio/mybucket/data.csv
mc rm myminio/mybucket/data.csv
Removing `myminio/mybucket/data.csv

This creates delete marker (soft delete) you will be able to check if your objects still exist with

mc ls --versions myminio/mybucket/prefix/data.csv

Example: Clear object retention for a specific version of a specific object

mc retention clear myminio/mybucket/prefix/obj.csv --version-id "3Jr2x6fqlBUsVzbvPihBO3HgNpgZgAnp"

Example: Show object retention for recursively for all versions of all objects under prefix

mc retention info myminio/mybucket/prefix --recursive --versions

Command legalhold

legalhold sets object legal hold for objects

USAGE:
   mc legalhold COMMAND [FLAGS | -h] TARGET

COMMANDS:
  set      set legal hold for object(s)
  clear    clear legal hold for object(s)
  info     show legal hold info for object(s)
  help, h  Shows a list of commands or help for one command

FLAGS:
  --recursive, -r               apply legal hold recursively
  --json                        enable JSON formatted output
  --help, -h                    show help

Example: Enable legal hold for objects with prefix prefix on bucket mybucket

mc legalhold set myminio/mybucket/prefix -r
Object legal hold successfully set for prefix `myminio/mybucket/prefix`.

Objects created with prefix prefix in the above bucket mybucket cannot be deleted until the legal hold is lifted

mc cp ~/test.csv myminio/mybucket/prefix/
mc rm myminio/mybucket/prefix/test.csv
Removing `myminio/mybucket/prefix/test.csv`.

This creates delete marker (soft delete) you will be able to check if your objects still exist with

mc ls --versions myminio/mybucket/prefix/comp.csv

Example: Disable legal hold on a specific object version

mc legalhold clear myminio/mybucket/prefix/obj.csv --version-id "HiMFUTOowG6ylfNi4LKxD3ieHbgfgrvC"

Example: Show object legal hold recursively for all objects at a prefix

mc legalhold info myminio/mybucket/prefix --recursive

Command pipe

pipe command copies contents of stdin to a target. When no target is specified, it writes to stdout.

USAGE:
   mc pipe [FLAGS] [TARGET]

FLAGS:
  --encrypt value               encrypt objects (using server-side encryption with server managed keys)
  --encrypt-key value           encrypt/decrypt objects (using server-side encryption with customer provided keys)
  --help, -h                    show help

ENVIRONMENT VARIABLES:
   MC_ENCRYPT:      list of comma delimited prefix values
   MC_ENCRYPT_KEY:  list of comma delimited prefix=secret values

Example: Stream MySQL database dump to Amazon S3 directly.

mysqldump -u root -p ******* accountsdb | mc pipe s3/sql-backups/backups/accountsdb-oct-9-2015.sql

Command cp

cp command copies data from one or more sources to a target. All copy operations to object storage are verified with MD5SUM checksums. Interrupted or failed copy operations can be resumed from the point of failure.

USAGE:
   mc cp [FLAGS] SOURCE [SOURCE...] TARGET

FLAGS:
  --rewind value                     roll back object(s) to current version at specified time
  --version-id value, --vid value    select an object version to copy
  --recursive, -r                    copy recursively
  --older-than value                 copy object(s) older than value in duration string (e.g. 7d10h31s)
  --newer-than value                 copy object(s) newer than value in duration string (e.g. 7d10h31s)
  --storage-class value, --sc value  set storage class for new object(s) on target
  --preserve,-a                      preserve file system attributes and bucket policy rules on target bucket(s)
  --attr                             add custom metadata for the object (format: KeyName1=string;KeyName2=string)
  --continue, -c                     create or resume copy session
  --encrypt value                    encrypt/decrypt objects (using server-side encryption with server managed keys)
  --encrypt-key value                encrypt/decrypt objects (using server-side encryption with customer provided keys)
  --tags value                       apply tags to the uploaded objects (eg. key=value&key2=value2, etc)
  --help, -h                         show help

ENVIRONMENT VARIABLES:
   MC_ENCRYPT:      list of comma delimited prefixes
   MC_ENCRYPT_KEY:  list of comma delimited prefix=secret values

Example: Copy a text file to an object storage.

mc cp myobject.txt play/mybucket
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0

Example: Copy a text file to an object storage with specified metadata.

mc cp --attr key1=value1;key2=value2 myobject.txt play/mybucket
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0

Example: Copy a folder recursively from MinIO cloud storage to Amazon S3 cloud storage with specified metadata.

mc cp --attr Cache-Control=max-age=90000,min-fresh=9000\;key1=value1\;key2=value2 --recursive play/mybucket/burningman2011/ s3/mybucket/
https://play.minio.io:9000/mybucket/myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0

Example: Copy a text file to an object storage and assign storage-class REDUCED_REDUNDANCY to the uploaded object.

mc cp --storage-class REDUCED_REDUNDANCY myobject.txt play/mybucket
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0

Example: Copy a server-side encrypted file to an object storage.

mc cp --recursive --encrypt-key "s3/documents/=32byteslongsecretkeymustbegiven1 , myminio/documents/=32byteslongsecretkeymustbegiven2" s3/documents/myobject.txt myminio/documents/
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0

Example: Perform key-rotation on a server-side encrypted object

mc cp --encrypt-key 'myminio1/mybucket=32byteslongsecretkeymustgenerate , myminio2/mybucket/=32byteslongsecretkeymustgenerat1' myminio1/mybucket/encryptedobject myminio2/mybucket/encryptedobject
encryptedobject:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0

Notice that two different aliases myminio1 and myminio2 are used for the same endpoint to provide the old secretkey and the newly rotated key.

Example: Copy a javascript file to object storage and assign Cache-Control header to the uploaded object

mc cp --attr Cache-Control=no-cache myscript.js play/mybucket
myscript.js:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0

Example: Copy a text file to an object storage and preserve the filesyatem attributes.

mc cp -a myobject.txt play/mybucket
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0

Example: Roll back to object version to 10 days earlier while copying.

mc cp --rewind 10d play/mybucket/myobject.txt myobject.txt
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0

Command mv

mv command moves data from one or more sources to a target. All move operations to object storage are verified with MD5SUM checksums. Interrupted or failed move operations can be resumed from the point of failure.

USAGE:
   mc mv [FLAGS] SOURCE [SOURCE...] TARGET

FLAGS:
  --recursive, -r                    move recursively
  --older-than value                 move object(s) older than value in duration string (e.g. 7d10h31s)
  --newer-than value                 move object(s) newer than value in duration string (e.g. 7d10h31s)
  --storage-class value, --sc value  set storage class for new object(s) on target
  --preserve,-a                      preserve file system attributes and bucket policy rules on target bucket(s)
  --attr                             add custom metadata for the object (format: KeyName1=string;KeyName2=string)
  --continue, -c                     create or resume move session
  --encrypt value                    encrypt/decrypt objects (using server-side encryption with server managed keys)
  --encrypt-key value                encrypt/decrypt objects (using server-side encryption with customer provided keys)
  --help, -h                         show help

ENVIRONMENT VARIABLES:
   MC_ENCRYPT:      list of comma delimited prefixes
   MC_ENCRYPT_KEY:  list of comma delimited prefix=secret values

Example: Move a text file to an object storage.

mc mv myobject.txt play/mybucket
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0
Waiting move operations to complete

Example: Move a text file to an object storage with specified metadata.

mc mv --attr key1=value1;key2=value2 myobject.txt play/mybucket
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0
Waiting move operations to complete

Example: Move a folder recursively from MinIO cloud storage to Amazon S3 cloud storage with specified metadata.

mc mv --attr Cache-Control=max-age=90000,min-fresh=9000\;key1=value1\;key2=value2 --recursive play/mybucket/burningman2011/ s3/mybucket/
https://play.minio.io:9000/mybucket/myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0
Waiting move operations to complete

Example: Move a text file to an object storage and assign storage-class REDUCED_REDUNDANCY to the uploaded object.

mc mv --storage-class REDUCED_REDUNDANCY myobject.txt play/mybucket
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0
Waiting move operations to complete

Example: Move a server-side encrypted file to an object storage.

mc mv --recursive --encrypt-key "s3/documents/=32byteslongsecretkeymustbegiven1 , myminio/documents/=32byteslongsecretkeymustbegiven2" s3/documents/myobject.txt myminio/documents/
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0
Waiting move operations to complete

Example: Perform key-rotation on a server-side encrypted object

mc mv --encrypt-key 'myminio1/mybucket=32byteslongsecretkeymustgenerate , myminio2/mybucket/=32byteslongsecretkeymustgenerat1' myminio1/mybucket/encryptedobject myminio2/mybucket/encryptedobject
encryptedobject:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0
Waiting move operations to complete

Notice that two different aliases myminio1 and myminio2 are used for the same endpoint to provide the old secretkey and the newly rotated key.

Example: Move a javascript file to object storage and assign Cache-Control header to the uploaded object

mc mv --attr Cache-Control=no-cache myscript.js play/mybucket
myscript.js:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0
Waiting move operations to complete

Example: Move a text file to an object storage and preserve the filesyatem attributes.

mc mv -a myobject.txt play/mybucket
myobject.txt:    14 B / 14 B  ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓  100.00 % 41 B/s 0
Waiting move operations to complete

Command rm

Use rm command to remove file or object

USAGE:
   mc rm [FLAGS] TARGET [TARGET ...]

FLAGS:
  --versions                       remove object(s) and all its versions
  --rewind value                   roll back object(s) to current versions at specified time
  --version-id value, --vid value  delete a specific version of an object
  --recursive, -r                  remove recursively
  --force                          allow a recursive remove operation
  --dangerous                      allow site-wide removal of objects
  --incomplete, -I                 remove incomplete uploads
  --dry-run                        perform a fake remove operation
  --stdin                          read object names from STDIN
  --older-than value               remove objects older than value in duration string (e.g. 7d10h31s)
  --newer-than value               remove objects newer than value in duration string (e.g. 7d10h31s)
  --bypass                         bypass governance
  --encrypt-key value              encrypt/decrypt objects (using server-side encryption with customer provided keys)
  --help, -h                       show help

ENVIRONMENT VARIABLES:
   MC_ENCRYPT_KEY:  list of comma delimited prefix=secret values

Example: Remove a single object.

mc rm play/mybucket/myobject.txt
Removing `play/mybucket/myobject.txt`.

Example: Remove an encrypted object.

mc rm --encrypt-key "play/mybucket=32byteslongsecretkeymustbegiven1" play/mybucket/myobject.txt
Removing `play/mybucket/myobject.txt`.

Example: Recursively remove a bucket's contents. Since this is a dangerous operation, you must explicitly pass --force option.

mc rm --recursive --force play/mybucket
Removing `play/mybucket/newfile.txt`.
Removing `play/mybucket/otherobject.txt`.

Example: Remove all uploaded incomplete files for an object.

mc rm --incomplete play/mybucket/myobject.1gig
Removing `play/mybucket/myobject.1gig`.

Example: Remove object and output a message only if the object is created older than 1 day, 2 hours and 30 minutes. Otherwise, the command stays quiet and nothing is printed out.

mc rm -r --force --older-than 1d2h30m myminio/mybucket
Removing `myminio/mybucket/dayOld1.txt`.
Removing `myminio/mybucket/dayOld2.txt`.
Removing `myminio/mybucket/dayOld3.txt`.

Example: Remove a particular version ID.

mc rm myminio/docs/money.xls --version-id "f20f3792-4bd4-4288-8d3c-b9d05b3b62f6"
Removing `myminio/docs/money.xls` (versionId=f20f3792-4bd4-4288-8d3c-b9d05b3b62f6).

Example: Remove all object versions older than one year.

mc rm myminio/docs/ --recursive --versions --rewind 365d
Removing `myminio/docs/foo.xls` (versionId=4d184091-ca84-4730-8d73-9e51a1016dc2, modTime=2019-08-05 13:42:08 +0000 UTC).
Removing `myminio/docs/foo.xls` (versionId=9f716132-81ad-480b-a315-e44144b252a0, modTime=2019-08-05 13:41:59 +0000 UTC).

Command share

share command securely grants upload or download access to object storage. This access is only temporary and it is safe to share with remote users and applications. If you want to grant permanent access, you may look at mc policy command instead.

Generated URL has access credentials encoded in it. Any attempt to tamper the URL will invalidate the access. To understand how this mechanism works, please follow Pre-Signed URL technique.

USAGE:
   mc share [FLAGS] COMMAND

FLAGS:
  --help, -h                       show help

COMMANDS:
   download	  generate URLs for download access
   upload	  generate ‘curl’ command to upload objects without requiring access/secret keys
   list		  list previously shared objects and folders

Sub-command share download - Share Download

share download command generates URLs to download objects without requiring access and secret keys. Expiry option sets the maximum validity period (no more than 7 days), beyond which the access is revoked automatically.

USAGE:
   mc share download [FLAGS] TARGET [TARGET...]

FLAGS:
  --version-id value, --vid value  share a particular object version
  --recursive, -r                  share all objects recursively
  --expire value, -E value         set expiry in NN[h|m|s] (default: "168h")
  --help, -h                       show help

Example: Grant temporary access to an object with 4 hours expiry limit.


mc share download --expire 4h play/mybucket/myobject.txt
URL: https://play.min.io/mybucket/myobject.txt
Expire: 0 days 4 hours 0 minutes 0 seconds
Share: https://play.min.io/mybucket/myobject.txt?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=Q3AM3UQ867SPQQA43P2F%2F20160408%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20160408T182008Z&X-Amz-Expires=14400&X-Amz-SignedHeaders=host&X-Amz-Signature=1527fc8f21a3a7e39ce3c456907a10b389125047adc552bcd86630b9d459b634

Example: Share a particular version of an object

mc share download --version-id 3Jr2x6fqlBUsVzbvPihBO3HgNpgZgAnp play/mybucket/myobject.txt
URL: https://play.min.io/mybucket/myobject.txt
Expire: 7 days 0 hours 0 minutes 0 seconds
Share: https://play.min.io/mybucket/myobject.txt?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=Q3AM3UQ867SPQQA43P2F%2F20160408%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20160408T182008Z&X-Amz-Expires=604800&versionId=3Jr2x6fqlBUsVzbvPihBO3HgNpgZgAnp&X-Amz-SignedHeaders=host&X-Amz-Signature=1527fc8f21a3a7e39ce3c456907a10b389125047adc552bcd86630b9d459b634

Sub-command share upload - Share Upload

share upload command generates a ‘curl’ command to upload objects without requiring access/secret keys. Expiry option sets the maximum validity period (no more than 7 days), beyond which the access is revoked automatically. Content-type option restricts uploads to only certain type of files.

USAGE:
   mc share upload [FLAGS] TARGET [TARGET...]

FLAGS:
  --recursive, -r                 recursively upload any object matching the prefix
  --expire value, -E value        set expiry in NN[h|m|s] (default: "168h")
  --content-type value, -T value  specify a content-type to allow
  --help, -h                      show help

Example: Generate a curl command to enable upload access to play/mybucket/myotherobject.txt. User replaces <FILE> with the actual filename to upload

mc share upload play/mybucket/myotherobject.txt
URL: https://play.min.io/mybucket/myotherobject.txt
Expire: 7 days 0 hours 0 minutes 0 seconds
Share: curl https://play.min.io/mybucket -F x-amz-date=20160408T182356Z -F x-amz-signature=de343934bd0ba38bda0903813b5738f23dde67b4065ea2ec2e4e52f6389e51e1 -F bucket=mybucket -F policy=eyJleHBpcmF0aW9uIjoiMjAxNi0wNC0xNVQxODoyMzo1NS4wMDdaIiwiY29uZGl0aW9ucyI6W1siZXEiLCIkYnVja2V0IiwibXlidWNrZXQiXSxbImVxIiwiJGtleSIsIm15b3RoZXJvYmplY3QudHh0Il0sWyJlcSIsIiR4LWFtei1kYXRlIiwiMjAxNjA0MDhUMTgyMzU2WiJdLFsiZXEiLCIkeC1hbXotYWxnb3JpdGhtIiwiQVdTNC1ITUFDLVNIQTI1NiJdLFsiZXEiLCIkeC1hbXotY3JlZGVudGlhbCIsIlEzQU0zVVE4NjdTUFFRQTQzUDJGLzIwMTYwNDA4L3VzLWVhc3QtMS9zMy9hd3M0X3JlcXVlc3QiXV19 -F x-amz-algorithm=AWS4-HMAC-SHA256 -F x-amz-credential=Q3AM3UQ867SPQQA43P2F/20160408/us-east-1/s3/aws4_request -F key=myotherobject.txt -F file=@<FILE>

Sub-command share list - Share List

share list command lists unexpired URLs that were previously shared

USAGE:
   mc share list COMMAND

COMMAND:
   upload:   list previously shared access to uploads.
   download: list previously shared access to downloads.

Command mirror

mirror command synchronizes data between filesystems and object storages, similarly to rsync.

USAGE:
   mc mirror [FLAGS] SOURCE TARGET

FLAGS:
  --overwrite                        overwrite object(s) on target if it differs from source
  --dry-run                          perform a fake mirror operation
  --watch, -w                        watch and synchronize changes
  --remove                           remove extraneous object(s) on target
  --region value                     specify region when creating new bucket(s) on target (default: "us-east-1")
  --preserve, -a                     preserve file system attributes and bucket policy rules on target bucket(s)
  --exclude value                    exclude object(s) that match specified object name pattern
  --older-than value                 filter object(s) older than value in duration string (e.g. 7d10h31s)
  --newer-than value                 filter object(s) newer than value in duration string (e.g. 7d10h31s)
  --storage-class value, --sc value  specify storage class for new object(s) on target
  --encrypt value                    encrypt/decrypt objects (using server-side encryption with server managed keys)
  --encrypt-key value                encrypt/decrypt objects (using server-side encryption with customer provided keys)
  --help, -h                         show help

ENVIRONMENT VARIABLES:
   MC_ENCRYPT:      list of comma delimited prefixes
   MC_ENCRYPT_KEY:  list of comma delimited prefix=secret values

Example: Mirror a local directory to 'mybucket' on https://play.min.io.

mc mirror localdir/ play/mybucket
localdir/b.txt:  40 B / 40 B  ┃▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓┃  100.00 % 73 B/s 0

Example: Continuously watch for changes on a local directory and mirror the changes to 'mybucket' on https://play.min.io.

mc mirror -w localdir play/mybucket
localdir/new.txt:  10 MB / 10 MB  ┃▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓┃  100.00 % 1 MB/s 15s

Command find

find command finds files which match the given set of parameters. It only lists the contents which match the given set of criteria.

USAGE:
  mc find PATH [FLAGS]

FLAGS:
  --exec value                  spawn an external process for each matching object (see FORMAT)
  --ignore value                exclude objects matching the wildcard pattern
  --name value                  find object names matching wildcard pattern
  --newer value                 match all objects newer than value in duration string (e.g. 7d10h31s)
  --older value                 match all objects older than value in duration string (e.g. 7d10h31s)
  --path value                  match directory names matching wildcard pattern
  --print value                 print in custom format to STDOUT (see FORMAT)
  --regex value                 match directory and object name with PCRE regex pattern
  --larger value                match all objects larger than specified size in units (see UNITS)
  --smaller value               match all objects smaller than specified size in units (see UNITS)
  --maxdepth value              limit directory navigation to specified depth (default: 0)
  --watch                       monitor a specified path for newly created object(s)
  ...
  ...
  --help, -h                    show help

Example: Find all jpeg images from s3 bucket and copy to MinIO "play/bucket" bucket continuously.

mc find s3/bucket --name "*.jpg" --watch --exec "mc cp {} play/bucket"

Command diff

diff command computes the differences between the two directories. It only lists the contents which are missing or which differ in size.

It DOES NOT compare the contents, so it is possible that the objects which are of same name and of the same size, but have difference in contents are not detected. This way, it can perform high speed comparison on large volumes or between sites

USAGE:
  mc diff [FLAGS] FIRST SECOND

FLAGS:
  --config-folder value, -C value  Path to configuration folder. (default: "/root/.mc")
  --quiet, -q                      Disable progress bar display.
  --no-color                       Disable color theme.
  --json                           Enable JSON formatted output.
  --debug                          Enable debug output.
  --insecure                       Disable SSL certificate verification.
  --help, -h                       Show help.

LEGEND:
    < - object is only in source.
    > - object is only in destination.
    ! - newer object is in source.

Example: Compare a local directory and a remote object storage.

 mc diff localdir play/mybucket
‘localdir/notes.txt’ and ‘https://play.min.io/mybucket/notes.txt’ - only in first.

Option [--json]

JSON option enables parseable output in JSON lines format.

Example: diff json output.

mc diff minio1/diffbucket minio2/diffbucket --json
{"status":"success","first":"","second":"http://127.0.0.1:9001/diffbucket/file1.png","diff":5}
{"status":"success","first":"http://127.0.0.1:9000/diffbucket/file2.png","second":"","diff":4}
{"status":"success","first":"http://127.0.0.1:9000/diffbucket/file3.png","second":"http://127.0.0.1:9001/diffbucket/file3.png","diff":2}
{"status":"success","first":"http://127.0.0.1:9000/diffbucket/file4.png","second":"http://127.0.0.1:9001/diffbucket/file4.png","diff":1}

Diff values in json output

Constant Value Meaning
differInUnknown 0 Could not perform diff due to error
differInNone 1 Does not differ
differInSize 2 Differs in size
differInMetadata 3 Differs in metadata
differInType 4 Differs in type exfile/directory
differInFirst 5 Only in source (FIRST)
differInSecond 6 Only in target (SECOND)
differInAASourceMTime 7 Differs in active-active source modtime

Command watch

watch provides a convenient way to watch on various types of event notifications on object storage and filesystem.

USAGE:
  mc watch [FLAGS] PATH

FLAGS:
  --events value                   filter specific types of events, defaults to all events (default: "put,delete,get")
  --prefix value                   filter events for a prefix
  --suffix value                   filter events for a suffix
  --recursive                      recursively watch for events
  --help, -h                       show help

Example: Watch for all events on object storage

mc watch play/testbucket
[2016-08-18T00:51:29.735Z] 2.7KiB ObjectCreated https://play.min.io/testbucket/CONTRIBUTING.md
[2016-08-18T00:51:29.780Z]  1009B ObjectCreated https://play.min.io/testbucket/MAINTAINERS.md
[2016-08-18T00:51:29.839Z] 6.9KiB ObjectCreated https://play.min.io/testbucket/README.md

Example: Watch for all events on local directory

mc watch ~/Photos
[2016-08-17T17:54:19.565Z] 3.7MiB ObjectCreated /home/minio/Downloads/tmp/5467026530_a8611b53f9_o.jpg
[2016-08-17T17:54:19.565Z] 3.7MiB ObjectCreated /home/minio/Downloads/tmp/5467026530_a8611b53f9_o.jpg
...
[2016-08-17T17:54:19.565Z] 7.5MiB ObjectCreated /home/minio/Downloads/tmp/8771468997_89b762d104_o.jpg

Command event

event provides a convenient way to manage various types of event notifications on a bucket. MinIO event notification can be configured to use AMQP, Redis, ElasticSearch, NATS and PostgreSQL services. MinIO configuration provides more details on how these services can be configured.

USAGE:
  mc event COMMAND [COMMAND FLAGS | -h] [ARGUMENTS...]

COMMANDS:
  add     add a new bucket notification
  remove  remove a bucket notification. With '--force' can remove all bucket notifications
  list    list bucket notifications

FLAGS:
  --ignore-existing, -p            ignore if event already exists
  --help, -h                       show help

Example: List all configured bucket notifications

mc event list play/andoria
MyTopic        arn:minio:sns:us-east-1:1:TestTopic    s3:ObjectCreated:*,s3:ObjectRemoved:*   suffix:.jpg

Example: Add a new 'sqs' notification resource only to notify on ObjectCreated event

mc event add play/andoria arn:minio:sqs:us-east-1:1:your-queue --event put

Example: Add a new 'sqs' notification resource with filters

Add prefix and suffix filtering rules for sqs notification resource.

mc event add play/andoria arn:minio:sqs:us-east-1:1:your-queue --prefix photos/ --suffix .jpg

Example: Remove a 'sqs' notification resource

mc event remove play/andoria arn:minio:sqs:us-east-1:1:your-queue

Command ilm

ilm - A convenient way to manage bucket lifecycle configuration.

USAGE:
  mc ilm COMMAND [COMMAND FLAGS | -h] [ARGUMENTS...]

COMMANDS:
  ls      list lifecycle configuration rules set on a bucket
  add     add a lifecycle configuration rule to existing (if any) rule(s) on a bucket
  rm      remove (if any) existing lifecycle configuration rule
  edit    modify a lifecycle configuration rule with given id
  export  export lifecycle configuration in JSON format
  import  import lifecycle configuration in JSON format

FLAGS:
  --help, -h                    show help

Example: List the lifecycle management rules

mc ilm ls myminio/testbucket
   ID    | Prefix | Enabled | Expiry |  Date/Days   | Transition | Date/Days | Storage-Class | Tags
---------|--------|---------|--------|--------------|------------|-----------|---------------|------
 Devices |  dev/  |    ✓    |   ✓   | 17 Sep 2020  |     ✗      |           |               |
---------|--------|---------|--------|--------------|------------|-----------|---------------|------

For more details about the lifecycle configuration, refer to official AWS S3 documentation here

Example: Edit the lifecycle management configuration rule given by ID "btd6pdot8748n94elvl0" to set tags

mc ilm edit --id "Documents" --tags "k1=v1&k2=v2" play/testbucket/dev
Lifecycle configurtaion rule with ID `btd6pdot8748n94elvl0` modified to play/testbucket/dev.

Example: Remove the lifecycle management configuration rule given by ID "Documents"

mc ilm rm --id "Documents" play/testbucket/dev
Rule ID `Documents` from target play/testbucket/dev removed.

Command policy

Manage anonymous bucket policies to a bucket and its contents

USAGE:
  mc policy [FLAGS] set PERMISSION TARGET
  mc policy [FLAGS] set-json FILE TARGET
  mc policy [FLAGS] get TARGET
  mc policy [FLAGS] get-json TARGET
  mc policy [FLAGS] list TARGET

PERMISSION:
  Allowed policies are: [private, public, download, upload].

FILE:
  A valid S3 policy JSON filepath.

FLAGS:
  --help, -h                       show help

Example: Show current anonymous bucket policy

Show current anonymous bucket policy for mybucket/myphotos/2020/ sub-directory

mc policy get play/mybucket/myphotos/2020/
Access permission for ‘play/mybucket/myphotos/2020/’ is ‘none’

Example : Set anonymous bucket policy to download only

Set anonymous bucket policy for mybucket/myphotos/2020/ sub-directory and its objects to download only. Now, objects under the sub-directory are publicly accessible. e.g mybucket/myphotos/2020/yourobjectnameis available at https://play.min.io:9000/mybucket/myphotos/2020/yourobjectname

mc policy set download play/mybucket/myphotos/2020/
Access permission for ‘play/mybucket/myphotos/2020/’ is set to 'download'

Example : Set anonymous bucket policy from a JSON file

Configure bucket policy for mybucket with a policy JSON file.

mc policy set-json /tmp/policy.json play/mybucket
Access permission for `play/mybucket` is set from `/tmp/policy.json`

Example : Set current anonymous bucket policy to private

Set anonymous bucket policy for mybucket/myphotos/2020/ sub-directory to private. This is equivalent to removing any bucket policies.

mc policy set private play/mybucket/myphotos/2020/
Access permission for ‘play/mybucket/myphotos/2020/’ is set to 'private'

Command tag

tag command provides a convenient way to set, remove, and list bucket/object tags. Tags are defined as key-value pairs.

USAGE:
  mc tag COMMAND [COMMAND FLAGS | -h] [ARGUMENTS...]

COMMANDS:
  list     list tags of a bucket or an object
  remove   remove tags assigned to a bucket or an object
  set      set tags for a bucket or an object

FLAGS:
  --help, -h                    show help
  --json                        enable JSON formatted output
  --debug                       enable debug output

Example : List tags assigned to an object

List tags for testobject in testbucket in alias s3

mc tag list s3/testbucket/testobject
Name                :    testobject
editable            :    only-by-owner-and-authenticated
confidentiality     :    open-to-authenticated-only

Example : Set tags for an object

Set tags for testobject in testbucket in alias s3

mc tag set s3/testbucket/testobject "key1=value1&key2=value2&key3=value3"
Tags set for s3/testbucket/testobject.

Example : Remove tags assigned to an object

Remove tags assigned to testobject in testbucket in alias s3

mc tag remove s3/testbucket/testobject
Tags removed for s3/testbucket/testobject.

Example: Assign tags to a object versions older than one week

mc tag set --versions --rewind 7d play/testbucket/testobject "status=old"

Command admin

Please visit here for a more comprehensive admin guide.

Command alias

alias command provides a convenient way to manage aliases entries in your config file ~/.mc/config.json. It is also OK to edit the config file manually using a text editor.

USAGE:
  mc alias COMMAND [COMMAND FLAGS | -h] [ARGUMENTS...]

COMMANDS:
  set, s      add a new alias to configuration file
  remove, rm  remove an alias from configuration file
  list, ls    lists aliases in configuration file

FLAGS:
  --help, -h                       show help

Example: Manage Config File

Add MinIO server access and secret keys to config file alias entry. Note that, the history feature of your shell may record these keys and pose a security risk. On bash shell, use set -o and set +o to disable and enable history feature momentarily.

set +o history
mc alias set myminio http://localhost:9000 OMQAGGOL63D7UNVQFY8X GcY5RHNmnEWvD/1QxD3spEIGj+Vt9L7eHaAaBTkJ
set -o history

Remove the alias from the config file.

mc alias remove myminio

List all configured aliases

mc alias list

Command update

Check for new software updates from https://dl.min.io. Experimental flag checks for unstable experimental releases primarily meant for testing purposes.

USAGE:
  mc update [FLAGS]

FLAGS:
  --quiet, -q  suppress chatty console output
  --json       enable JSON formatted output
  --help, -h   show help

Example: Check for an update.

mc update
You are already running the most recent version of ‘mc’.

Command stat

stat command displays information on objects (with optional prefix) contained in the specified bucket on an object storage. On a filesystem, it behaves like stat command.

USAGE:
   mc stat [FLAGS] TARGET

FLAGS:
  --rewind value                    stat on older version(s)
  --versions                        stat all versions
  --version-id value, --vid value   stat a specific object version
  --recursive, -r                   stat all objects recursively
  --encrypt-key value               encrypt/decrypt objects (using server-side encryption with customer provided keys)
  --help, -h                        show help

ENVIRONMENT VARIABLES:
   MC_ENCRYPT_KEY:  list of comma delimited prefix=secret values

Example: Display information on a bucket named "mybucket" on https://play.min.io.

mc stat play/mybucket
Name      : mybucket/
Date      : 1969-12-31 16:00:00 PST
Size      : 0 B
Type      : folder
Metadata  :
  Encryption: Not Set
  Versioning: Enabled
  LockConfiguration:
    RetentionMode: COMPLIANCE
    Retention Until Date: 1DAYS
  Notification: Unset
  Replication: Enabled
  Policy: none
  Location: us-east-1
  Tagging: key1:value1, key2:value2
  ILM: Not Set

Example: Display information on an encrypted object "myobject" in "mybucket" on https://play.min.io.

mc stat play/mybucket/myobject --encrypt-key "play/mybucket=32byteslongsecretkeymustbegiven1"
Name      : myobject
Date      : 2018-03-02 11:47:13 PST
Size      : 132B
ETag      : d03ba22cd78282b7aef705bf31b8cded
Type      : file
Metadata  :
  Content-Type                                   : application/octet-stream
  X-Amz-Server-Side-Encryption-Customer-Key-Md5  : 4xSRdYsabg+s2nlsHKhgnw==
  X-Amz-Server-Side-Encryption-Customer-Algorithm: AES256

Example: Display information on objects contained in the bucket named "mybucket" on https://play.min.io.

mc stat -r play/mybucket
Name      : mybucket/META/textfile
Date      : 2018-02-06 18:17:38 PST
Size      : 1024B
ETag      : d41d8cd98f00b204e9800998ecf8427e
Type      : file
Metadata  :
  Content-Type: application/octet-stream

Name      : mybucket/emptyfile
Date      : 2018-02-06 18:16:14 PST
Size      : 100B
ETag      : d41d8cd98f00b204e9800998ecf8427e
Type      : file
Metadata  :
  Content-Type: application/octet-stream

Example: Stat a specific object version

mc stat --version-id "CL3sWgdSN2pNntSf6UnZAuh2kcu8E8si" s3/personal-docs/2018-account_report.docx
Name      : s3/personal-docs/2018-account_report.docx
Date      : 2018-02-06 18:16:14 PST
Size      : 100B
ETag      : d41d8cd98f00b204e9800998ecf8427e
Type      : file
Metadata  :
  Content-Type: application/vnd.openxmlformats-officedocument.wordprocessingml.document

Command version

version manage bucket versioning

NAME:
  mc version - manage bucket versioning

USAGE:
  mc version TARGET [enable | suspend | info]

COMMANDS:
  enable   Enable bucket versioning
  suspend  Suspend bucket versioning
  info     Show bucket versioning status

Example: Enable versioning on bucket mybucket

mc version enable myminio/mybucket
myminio/mybucket versioning is enabled

Example: Display the version configuration for bucket mybucket

mc version info myminio/mybucket
myminio/mybucket versioning status is enabled

Example: Suspend versioning for bucket mybucket

mc version suspend myminio/mybucket
myminio/mybucket versioning is suspended

Command undo

undo reverts latest PUT/DELETE operations

NAME:
  mc undo - undo PUT/DELETE operations

USAGE:
  mc undo [FLAGS] SOURCE

FLAGS:
  --recursive, -r               undo last S3 put/delete operations
  --force                       force recursive operation
  --last value                  undo N last changes (default: 1)
  --dry-run                     fake an undo operation
  --help, -h                    show help

Example: Undo the last 3 uploads and/or removals of a particular object

mc undo s3/backups/file.zip --last 3
✓ Last delete of `CREDITS` is reverted.
✓ Last upload of `CREDITS` (vid=mj2juHIoyvU94s8kIim5H.Z9L0QO50wO) is reverted.
✓ Last upload of `CREDITS` (vid=przFKd1iWC7ts_8FNoIvLae8NH_BAi_X) is reverted.

Command encrypt

encrypt manages bucket encryption config

NAME:
  mc encrypt - manage bucket encryption config

USAGE:
  mc encrypt COMMAND [COMMAND FLAGS | -h] [ARGUMENTS...]

COMMANDS:
  set    Set encryption config
  clear  Clear encryption config
  info   Show bucket encryption status

FLAGS:
  --help, -h                    show help

Example: Display bucket encryption status for bucket mybucket

mc encrypt info myminio/mybucket
Algorithm: AES256

Example: Set SSE-S3 auto encryption for bucket mybucket on alias myminio

mc encrypt set sse-s3 myminio/mybucket
Auto encryption has been set successfully for myminio/source

Example: Set SSE-KMS auto encryption for bucket mybucket on alias myminio with KMS Key Id "arn:aws:kms:us-east-1:xxx:key/xxx"

mc encrypt set sse-kms "arn:aws:kms:us-east-1:xxx:key/xxx" myminio/mybucket
Auto encryption has been set successfully for myminio/source

Example: Clear auto encryption config for bucket mybucket on alias myminio

mc encrypt clear myminio/mybucket
Auto encryption configuration has been cleared successfully.

Command replicate

replicate manages bucket server side replication

NAME:
  mc replicate - manage bucket server side replication

USAGE:
  mc replicate COMMAND [COMMAND FLAGS | -h] [ARGUMENTS...]

COMMANDS:
  add     add a server side replication configuration rule
  edit    modify an existing server side replication cofiguration rule
  ls      list server side replication configuration rules
  export  export server side replication configuration
  import  import server side replication configuration in JSON format
  rm      remove a server side replication configuration rule(s)

FLAGS:
  --help, -h                    show help

Example: Add replication configuration rule on mybucket on alias myminio. Enable delete marker replication and replication of versioned deletes for the configuration

mc replicate add myminio/mybucket/prefix --tags "key1=value1&key2=value2" --storage-class "STANDARD" --remote-bucket 'arn:minio:replication:us-east-1:c5be6b16-769d-432a-9ef1-4567081f3566:destbucket' --priority 1 --replicate "delete-marker,delete"
Replication configuration rule applied to myminio/mybucket/prefix.

Example: Disable replication configuration rule with rule Id "bsibgh8t874dnjst8hkg" on bucket "mybucket" with prefix "prefix" for alias myminio

mc replicate edit myminio/mybucket/prefix --id "bsibgh8t874dnjst8hkg" --state disable
Replication configuration rule with ID `bsibgh8t874dnjst8hkg` applied to myminio/mybucket/prefix.

Example: Change priority of rule with rule ID "bsibgh8t874dnjst8hkg" on bucket "mybucket" for alias myminio.

mc replicate edit myminio/mybucket/prefix --id "bsibgh8t874dnjst8hkg" --priority 3
Replication configuration rule with ID `bsibgh8t874dnjst8hkg` applied to myminio/mybucket/prefix.

Example: Clear tags on rule ID "bsibgh8t874dnjst8hkg" for target myminio/bucket which has a replication configuration rule with prefix "prefix"

mc replicate edit myminio/mybucket/prefix --id "bsibgh8t874dnjst8hkg" --tags ""
Replication configuration rule with ID `bsibgh8t874dnjst8hkg` applied to myminio/mybucket/prefix successfully.

*Example: Enable delete marker replication and versioned delete replication on rule ID "bsibgh8t874dnjst8hkg" for target myminio/bucket which has a replication configuration rule with prefix "prefix"

mc replicate edit myminio/mybucket/prefix --id "bsibgh8t874dnjst8hkg" --replicate "delete,delete-marker"
Replication configuration rule with ID `bsibgh8t874dnjst8hkg` applied to myminio/mybucket/prefix successfully.

*Example: Disable delete marker and versioned delete replication on rule ID "bsibgh8t874dnjst8hkg" for target myminio/bucket which has a replication configuration rule with prefix "prefix"

mc replicate edit myminio/mybucket/prefix --id "bsibgh8t874dnjst8hkg" --replicate ""
Replication configuration rule with ID `bsibgh8t874dnjst8hkg` applied to myminio/mybucket/prefix successfully.

Example: List replication configuration rules set on mybucket on alias myminio

mc replicate ls myminio/mybucket

Example: Clear replication configuration for bucket mybucket on alias myminio

mc replicate rm --all --force myminio/mybucket
Replication configuration has been removed successfully for myminio/mybucket

Example: Remove replication configuration rule with id bsibgh8t874dnjst8hkg for bucket mybucket on alias myminio

mc replicate rm --id "bsibgh8t874dnjst8hkg" myminio/mybucket/prefix
Replication configuration rule with id "bsibgh8t874dnjst8hkg" has been removed successfully for myminio/mybucket

Example: Import replication configuration for bucket mybucket on alias myminio from /data/replicate/config

mc replicate import myminio/mybucket < /data/replicate/config
Replication configuration successfully set on `myminio/mybucket`.

Example: Export replication configuration for bucket mybucket on alias myminio to /data/replicate/config

mc replicate export myminio/mybucket > /data/replicate/config

Example: Show replication status of mybucket on alias myminio

mc replicate status myminio/mybucket

*Example: Resync replication of previously replicated objects from mybucket on alias myminio to remote target "arn:minio:replication::xxx:mybucket".

mc replicate resync start myminio/mybucket --remote-bucket "arn:minio:replication::xxx:mybucket"

*Example: Show status of replication resync of target "arn:minio:replication::xxx:mybucket" for mybucket on alias myminio.

mc replicate resync status myminio/mybucket --remote-bucket "arn:minio:replication::xxx:mybucket"

Command support - support related commands

NAME:
  mc support register           register with MinIO subscription network
  mc support callhome           configure callhome settings
  mc support diag, diagnostics  upload health data for diagnostics
  mc support perf               analyze object, network and drive performance
  mc support inspect            upload raw object contents for analysis
  mc support profile            generate profile data for debugging
  mc support logs               configure/display MinIO console logs
  mc support top                provide top like statistics for MinIO

Register MinIO cluster at alias 'play' on SUBNET, using the name "play-cluster".

mc support register play --name play-cluster

Enable logs callhome for cluster with alias 'play'.

mc support callhome set play logs=on

Download 'xl.meta' for a specific object from all the drives in a zip file.

mc support inspect myminio/bucket/test*/xl.meta

Run object speed measurement with autotuning the concurrency to obtain maximum throughput and IOPs.

mc support perf object myminio/

Upload MinIO diagnostics report for 'play' (https://play.min.io by default) to SUBNET

mc support diag play

Get CPU profiling for 2 minutes

mc support profile  --type cpu --duration 120 myminio/

Print last 5 application error logs entries for node 'node1' on MinIO server with alias 'myminio'

mc support logs show --last 5 --type application myminio node1

Enable logs for cluster with alias 'play'

mc support logs enable play

Get a list of the 10 oldest locks on a distributed MinIO cluster, where 'myminio' is the MinIO cluster alias.*

mc admin top locks myminio

Display current in-progress all 's3.PutObject' API calls.

mc support top api --name s3.PutObject myminio/

Command ping

rb command to perform liveness check

USAGE:
   mc ping [FLAGS] TARGET

FLAGS:
  --count value, -c value        perform liveliness check for count number of times (default: 0)
  --error-count value, -e value  exit after N consecutive ping errors
  --interval value, -i value     wait interval between each request in seconds (default: 1)
  --distributed, -a              ping all the servers in the cluster, use it when you have direct access to nodes/pods
  --help, -h                     show help


Example: Perform liveness check on https://play.min.io.

mc ping play
1: https://play.min.io:   min=919.538ms   max=919.538ms   average=919.538ms   errors=0   roundtrip=919.538ms
2: https://play.min.io:   min=278.356ms   max=919.538ms   average=598.947ms   errors=0   roundtrip=278.356ms
3: https://play.min.io:   min=278.356ms   max=919.538ms   average=504.759ms   errors=0   roundtrip=316.384ms