Change Default Text Editor : sudo update-alternatives --config editor

Get current active proccess : top or htop

Folder Operations

Command : ‘mv’

mv have 2 abilitiy

  • Rename file
    • mv folder1 folder1_copied
  • Move file

mv how to get it move or rename ? (source) mv /test1 /test2

  • if /test2 parameter is a folder path (not a file) AND exists then always do ‘move’ (test2/test1)

  • else if /test2 parameter doesnt exists, then always do ‘rename’ (’test1’ name to ’test2’)

Copy Folder : cp -r ./folder1 /home/user1

Delete File | Directories :

  • single file : rm /filepath/fileName
  • multiple Folder :rm -r /filepath/folderName

List Ports : sudo lsof -i -P -n

List Users : cat /ect/passwd

close ssh connection : exit

delete user : userdel username

Case : Create Sudo user

“Warning! current user must be have sudo privileges”

  • Create user : sudo adduser user1
    • you can skip up to password area
  • Add user Sudoers : sudo usermod -aG sudo user1
  • Verify sudo access : su - user1
    • then : sudo ls /root

For PM2

Access gui : pm2 monit

start proccess : pm2 start something