screen command is a terminal multiplexer that allows you to create multiple virtual terminals within a single terminal window or remote session. It is a powerful tool for managing multiple terminal sessions and can be useful for remote administration, running long-running processes, and working on multiple projects simultaneously.
Starting a Screen Session
To start a new screen session, simply type
screen into your terminal. This will create a new virtual terminal within your current terminal window.
Detaching from a Screen Session
To detach from a screen session, use the
Ctrl-a d keyboard shortcut. This will return you to your original terminal session without closing the screen session.
Reattaching to a Screen Session
To reattach to a screen session, use the
screen -r command. If you have multiple screen sessions running, you can specify which session to attach to by specifying the session ID.
$ screen -r
Creating a Named Screen Session
You can create a named screen session by using the
-S option followed by the session name. This can be useful for managing multiple screen sessions and makes it easier to reattach to a specific session.
$ screen -S mysession
Listing Active Screen Sessions
To list all active screen sessions, use the
screen -ls command. This will display a list of all active screen sessions along with their session IDs and names (if applicable).
$ screen -ls
Killing a Screen Session
To kill an active screen session, use the
screen -X -S <session-id> quit command. This will terminate the specified screen session.
$ screen -X -S mysession quit
The following table lists all available options for the
||Create a named screen session|
||Reattach to a specific screen session|
||List all active screen sessions|
||Kill an active screen session|
- If you are having trouble detaching from a screen session, make sure that you are using the correct keyboard shortcut (
- If you are unable to reattach to a screen session, make sure that the session is still active and that you are specifying the correct session ID.
- If you are experiencing issues with screen sessions not starting or terminating unexpectedly, try updating your version of the
screencommand is a powerful tool for managing multiple terminal sessions, but it can have a steep learning curve for beginners.
- When using screen sessions for remote administration, make sure to properly secure your connection to prevent unauthorized access.