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How to list running screen sessions on Linux?
Screen or sometimes also known as GNU Screen, is a terminal multiplexer. What it means is that it allows you the privilege to start a screen session and then open any number of windows inside that session.
It might also be interesting to note that a process that is running in Screen will continue to run even when their window is not visible anymore.
Installing Linux Screen
In order to install the screen package if it is not already present on your Linux distribution, you can run any of the suitable commands shown below for your machine.
For Ubuntu and Debian
sudo apt update sudo apt install screen
For CentOS and Fedora
sudo yum install screen
Starting Screen
You can start a screen session by typing the command shown below in your terminal.
screen
Now we know how to install a screen and make use of it, the following command shown below will list all of the screen sessions for a user.
Command
screen -ls
In case you want to see all screen session on a specific machine you can do −
ls -laR /var/run/screen/
Output
immukul@192 ~ # ls -laR /var/run/screen/ /var/run/screen/: total 1 drwxrwxr-x 4 root utmp 96 Feb 1 2020 . drwxr-xr-x 10 root root 840 Feb 1 03:10 .. drwx------ 2 immukul users 88 Feb 13 11:33 R-immukul drwx------ 2 root root 48 Feb 11 10:50 R-root /var/run/screen/R-immukul: total 0 drwx------ 2 immukul users 88 Jan 13 11:33 . drwxrwxr-x 4 root utmp 96 Mar 1 2020 .. prwx------ 1 immukul users 0 Feb 11 10:41 12931.pts-0.gentle /var/run/screen/R-root: total 0 drwx------ 2 root root 48 Feb 13 10:50 . drwxrwxr-x 4 root utmp 96 Mar 31 2019 ..
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