Screen Command in Linux
This article explains how to create, attach, detach, record and exit a screen session in Linux using screencommand.
screenWhat is command
in Linux?
screenThe screen command is a bash program used to manage Linux windows. Using the screen command, you can start multiple screen sessions. A screen session can also have multiple windows.
screenThe command helps to separate processes running on your terminal by placing them in different sessions. screenThe command allows you to switch between sessions and select the session to attach to.
screenLaunch screen
in Linux using command
Launch the program in Linux screen. Type as shown below screenand press Enter.
The above command displays the following output. Press <Enter> and Spaceyou will be directed to the terminal.
From the terminal, you can run commands just like you would in a normal terminal environment.
We are now screenin the terminal session that we started with the command. To detach from the session, press Ctrl+ Aand D.
You will see output similar to the following.
screenList all screen sessions in Linux
using command
To list all the screens available on our machine, we use the command with the -lsor -listoption screen.
The image below shows the available screens on our machine.
screenAttach screen session
in Linux using command
We use the command with -rthe detach option screenwhich takes a session ID as an argument in order to return to the screen session after detaching.
We have reattached 2276the session with ID in the following figure.
screenStart screen logging
in Linux using command
To enable logging when we start a screen session, we use the command with -Lthe -log option . It will create a log file for the screen session in the screencurrent -log folder.screenlog.0
We start a new screen session and enable logging in the image below.
Once inside the screen session we type the following command and then detach the session by typing Ctrl+ Aand D.
Now that we are outside of the session, we use lsthe command to list the contents of the current directory and pipe the output to grepthe command. grepThe command looks for screenlogmatches and displays the lines that match.
The image below shows that we have a screenlog.0screen log file called .
To leave the screen terminal session, you can press Ctrl+ Aand Dto detach the screen. You can also type the command on the terminal exitand it will detach the screen.
Using Ctrl+ Aand Kwill kill the screen.
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