Base: Add a manual page for the shred utility

Base/usr/share/man/man1/shred.md

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+## Name
+
+shred - destroy a file with its content on disk
+
+## Synopsis
+
+```**sh
+$ shred [options...] [path...]
+```
+
+## Description
+
+`shred` destroys files' content on disk.
+
+## Options
+
+* `--help`: Display this message
+* `-v`, `--verbose`: Show progress during the shred operation
+* `-n`, `--iterations`: Iterations count of shred operation
+* `-u`: Deallocate and remove file after overwriting
+* `--random-source`: Get random bytes from a file other than /dev/random
+
+## Arguments
+
+* `path`: Files to shred
+
+## Examples
+
+```sh
+# shred a file and remove it aftewards
+$ shred -u /tmp/FILE_TO_BE_SHREDDED_AND_REMOVED
+# shred a file with 10 iterations
+$ shred --iterations 10 /tmp/FILE_TO_BE_SHREDDED
+# shred a file with verbose progress and 10 iterations
+$ shred -v --iterations 10 /tmp/FILE_TO_BE_SHREDDED
+```
+
+## See also
+* [`rm`(1)](help://man/1/rm) to delete a file or directory without overwriting the content first