How to use Linux Screen on Ubuntu

 

Introduction

Screen or GNU Screen is a terminal multiplexer. In other words, it means that you can start a screen session and then open any number of windows (virtual terminals) inside that session. Processes running in Screen will continue to run when their window is not visible even if you get disconnected.



Install Linux Screen on Ubuntu or Debian

sudo apt update
sudo apt install screen

Starting Screen

screen

If you run multiple screen, set session name for screen, easy to control

screen -S [session_name]

Some most commands for manage Screen

  • Ctrl+a c Create a new window (with shell)
  • Ctrl+a " List all window
  • Ctrl+a 0 Switch to window 0 (by number )
  • Ctrl+a A Rename the current window
  • Ctrl+a S Split current region horizontally into two regions
  • Ctrl+a | Split current region vertically into two regions
  • Ctrl+a tab Switch the input focus to the next region
  • Ctrl+a Ctrl+a Toggle between the current and previous region
  • Ctrl+a Q Close all regions but the current one
  • Ctrl+a X Close the current region

Check and find Screen

screen -ls

Kill Screen

screen -XS [session # you want to quit] quit

(-X = Execute command, -S session PID to execute on)

Example: 

screen -XS 20411 quit

Reattach to a Linux Screen

To reume your screen session use the following command:
screen -r

Detach from Linux Screen Session

You can detach from the screen session at any time:
ctrl+a d

Basic Linux Screen Usage

 Below are the most basic steps for getting started with screen:
  • On the command prompt, type  screen.
  • Run the desired program.
  • Use the  key sequence to  Ctrl-a + d detach from the screen session.
  • Reattach to the screen session by typing  screen -r
.^^

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