linuxcommands.txt

File search related:

#of files in a directory -
ls -l . | egrep -c '^-'

grep through hugh number of files == find . | xargs -n16 -P8 grep -H "string"

find ./img -name "*2020-07-07T14:21:34.057825*"

Faster way to display files count -
find -maxdepth 1 -type d | while read -r dir; do printf "%s:\t" "$dir"; find "$dir" -type f | wc -l; done

Machine Learning related:

watch -n 0.5 nvidia-smi


Docker related:

docker learn resource -	https://github.com/docker/labs/tree/master/beginner
docker commands -
run docker
docker run -it <container name> /bin/bash
Into docker container -
docker exec -it <container name> /bin/sh

docker exec -it lanefollowing_collect /bin/bash


a = all, q= quiet mode(only number id)
docker stop $(docker ps -aq)
docker rm $(docker ps -aq)

ROS related:

---Build ros2 package---
source /opt/ros/galactic/setup.bash
cd ~/ros2_ws
colcon build --symlink-install

---Run rosbridge---
source /opt/ros/galactic/setup.bash
rosbridge

--Running ROS2 node---
source /opt/ros/galactic/setup.bash
source ~/ros2_ws/install/local_setup.bash
ros2 run {your_package} {your_node}

Migration tool -
https://github.com/awslabs/ros2-migration-tools