Master Linux Session Management with screen, tmux, and Job Control

What is a Linux session?

A session is a temporary interaction between a user and the computer opened in a terminal window; processes started in that window are tied to the session and terminate when the window is closed.

Decoupling sessions from windows

To keep a session running after the terminal window is closed, you can unbind the session from the window, allowing the session to continue independently and later re‑attach it to another window.

Using screen for session management

Create a session : screen -S [SESSION] (e.g., screen -S myworld)

Detach (background) a session : press Ctrl+a d Re‑attach a session : screen -r myworld List all sessions : screen -ls Exit a session : type exit inside the screen

Linux job management

Jobs can run in the foreground (occupying the terminal) or in the background (released from the terminal).

Send a running job to background : press Ctrl+z (suspends it) then bg to continue running.

Start a job directly in background : append & to the command (e.g., COMMAND &).

Detach a job completely from the terminal :

Use nohup COMMAND > /dev/null 2>&1 & Run the command inside screen or

tmux

Job control commands

jobs

– list background jobs in the current terminal. fg [[%]JOB_NUM] – bring a background job to the foreground. bg [[%]JOB_NUM] – resume a stopped job in the background. kill [%JOB_NUM] – terminate a specific job.

Additional tools

Besides screen, tmux provides similar session multiplexing capabilities, allowing you to keep processes running independently of any single terminal window.