Linux Command CheatSheet

linux, ubuntu

Permission

  • List all groups

    id -nG

  • Add one username to the user group

    sudo usermod -aG docker username

  • Check permission

    getfacl /var/www/html/

  • Add permission

    Just add the -R option to recursively change the permissions of files. An example, recursively add read and write permissions for the owner and group on foldername.

    chmod -R ug+rw foldername

Directory

  • Get current directory

    pwd

  • Go to user directory

    ‘cd ~’

  • Go to previous directory

    ‘cd -‘

Process

  • Check processes that are using specific port

    sudo fuser 5000/tcp -k

  • Get Process and its user

    ps -aux |grep [servicename]

  • Control the system services

    sudo systemctl status [servicename]

    sudo systemctl restart [servicename]

  • Windows Kill Process

    Step one:

    netstat -ano | findstr :8080

    Step two:

    taskkill /PID typeyourPIDhere /F

    (/F forcefully terminates the process)