Useful Ubuntu Commands

ports_ubuntu.md

PORTS

1. Checking the process running on a port
   • lsof -i :<port_number>
   • sudo netstat -peanut | grep <port_number>
2. Checking processes
   • ps aux | grep <process_name>

LOGS

1. Checking logs of various processes
   • tail -f /var/log/<>.log

ubuntu_commands.md

Run a simple rsync

• rsync -azPh --dry-run -e "ssh -i key.pem" [email protected]:/home/ubuntu/datasets/lidar/SCANS/ ./
• rsync -azPh -e "ssh -i key.pem" [email protected]:/home/ubuntu/datasets/lidar/SCANS/ ./
• rsync -v --stats --progress -azh -e "ssh -i key.pem" [email protected]:/home/ubuntu/datasets/lidar/SCANS/ ./

• - a : archive / recursive
  - z : compress
  - h : human readable
  - P : progress
  

Run a rsync for extended duration

• n=0; while [[ $n -lt 10 ]]; do rsync -rvzhu -e ssh playment-gpu:/home/play/data/pspnet/processed/driveai/*_overlay.jpeg ./; sleep 5; n=$((n+1)); done

Killing Processes

• ps ax | grep 'ipykernel' | awk -F ' ' '{print $1}' | xargs sudo kill -9

Finding File Count in a folder

• ll | wc -l

Find a file/folder using findutils

• find ./ -iname '*data*'
• find /usr -iname '*opencv*'
• find ./ -iname '*cuda*'

ubuntu_process.md

HTOP

• sudo apt install htop
• htop
• htop -p <pid>
• htop --pid=<pid1>,<pid2>

Jupyter Process

• ps aux | grep jupyter/kernel
• ps aux | grep jupyter/kernel | awk -F ' ' '{print $2}'

Single Process

• ps aux | grep jupyter/kernel | awk -F ' ' '{print $2}' | head -n 1
• pid_jupyterkernel=$(ps aux | grep jupyter/kernel | awk -F ' ' '{print $2}' | head -n 1)
  • echo $pid_jupyterkernel
• pid_jupyterkernel=$(ps aux | grep jupyter/kernel | awk -F ' ' '{print $2}' | head -n 1) && htop -p $pid_jupyterkernel
• Adding to ~/.basrhc
  • alias jupyter_htop="pid_jupyterkernel=$(ps aux | grep jupyter/kernel | awk -F ' ' '{print $2}' | head -n 1) && htop -p $pid_jupyterkernel"
  • You can press "Shift + h" (for capital H) and avoid seeing all the child processes

All Process

• pid_jupyterkernel=$(ps aux | grep jupyter/kernel | awk -F ' ' '{print $2}' | tr '\n' ',') && htop --pid=$pid_jupyterkernel
• Adding to ~/.basrhc
  • alias jupyter_htop="pid_jupyterkernel=$(ps aux | grep jupyter/kernel | awk -F ' ' '{print $2}' | tr '\n' ',') && htop --pid=$pid_jupyterkernel"
  • alias jupyter_htop="pid_jupyterkernel=$(ps aux | grep jupyter/kernel | awk -F ' ' '{print $2}' | tr '\n' ',') && echo $pid_jupyterkernel && sleep 3 && htop --pid=$pid_jupyterkernel"