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Home » Linux » How To Install and Use Linux Screen with Commands

How To Install and Use Linux Screen with Commands

sammbysamm
October 16, 2023
Install and Use Linux Screen

How To Install and Use Linux Screen with Commands

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Introduction

Efficiently managing multiple tasks within a Linux terminal is essential for productivity. Linux Screen, a versatile command-line utility, empowers users to create and manage multiple virtual terminal sessions within a single window. In this comprehensive guide, we’ll walk you through the step-by-step process of how to install and use Linux Screen, assists in improving your multitasking capabilities and streamlines your overall command-line experience..

Table of Contents

  • Introduction
  • Need for Terminal Multiplexing
  • Introducing Linux Screen
  • Prerequisites
  • How to Install Screen on Linux
    • Installing Screen on CentOS
    • Installing Screen on Debian or Ubuntu
    • Installing Screen on OpenSUSE
    • Screen Command Syntax
    • Starting Linux Screen
    • List all Screens
    • Detach from Linux Screen
    • Locking and Adding Passwords to Screen
    • Delete Linux Screen Session
    • Manage Linux Screen
  • Conclusion

Need for Terminal Multiplexing

As Linux users, the terminal is our primary interface to interact with the system. Often, tasks require running multiple commands or processes simultaneously. Terminal multiplexing addresses this need by allowing us to divide a single terminal window into several virtual ones, each with its own running processes.

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Introducing Linux Screen

Linux Screen, a powerful terminal multiplexer, enables users to create, manage, and switch between multiple terminal sessions with ease. Whether you’re a developer, system administrator, or enthusiast, Screen enhances your multitasking capabilities and facilitates efficient workflow management. The screen in Linux is a software package which allows you to open multiple terminal sessions inside your single SSH window. The processes that are running in the screen will continue to run even if you got disconnected from SSH.

Prerequisites

Before we dive into the how to install and use Linux Screen, there is prerequisite you need to ensure are in place. To set up these servers, follow our guides :

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How to Install Screen on Linux

The process of installing Linux Screen varies based on the distribution of Linux you’re using. If you’re utilizing a recent version of Linux, such as Ubuntu 20.04 or CentOS 8, chances are that Screen is already pre-installed.

samm@linux:~$ screen --version
Screen version 4.09.00 (GNU) 30-Jan-22

Installing Screen on CentOS

To install Screen on Red Hat / CentOS, enter the command:

$ sudo yum install screen

Installing Screen on Debian or Ubuntu

To install Screen on Debian/Ubuntu, enter the following:

$ sudo apt install screen

Installing Screen on OpenSUSE

To install Screen on OpenSUSE, enter the following:

$ sudo zypper install screen

Screen Command Syntax

The syntax of the screen command is as follows

$ screen [OPTIONS] [ CMD [ ARGS ] ]

In the above syntax, we can see that all the parameters are options and they are represented by the square brackets ([]).

Starting Linux Screen

You can easily start screen by just typing the screen command.

$ screen

This will open a new screen session.

Install and Use Linux Screen
Linux Screen

The initial launch begins with a brief licensing agreement displayed on the screen. Press Space to continue to the next page.

You can also name your screen session with the -S operator.

$ screen -S screen_name

This command will create a screen with the assigned name.

List all Screens

To list all screens you can use the ls option.

samm@linux:~$ screen -ls
There are screens on:
        63530.pts-3.linux       (08/04/2023 03:51:33 AM)        (Attached)
        62791.pts-0.linux       (08/04/2023 03:49:52 AM)        (Attached)
2 Sockets in /run/screen/S-samm.

Detach from Linux Screen

To detach from screen and leave the window running in the background, use the keystroke:

Ctrl + a and d

The command leaves the process working in Screen and exits the interface. It is the equivalent of minimizing a window in a graphical operating system.

To reattach to a running screen session, use:

$ screen -r

If you only have one Screen instance, you don’t need to enter the session ID. If you have more than one, you’ll need to specify which session ID you want to reconnect to.

Once you have the ID, add it to the screen -r command:

screen -r sessionID

For example, to restore screen 63530.pts-3.linux, run

$ screen -r 63530.pts-3.linux

Locking and Adding Passwords to Screen

To lock the screen, use the shortcut:

Ctrl + a and x

The default lock screen mechanism asks for your Linux password to unlock the screen.

Screen used by samm <samm> on linux.
Password:

Additionally, Screen allows you to protect a session with its own password. Each time you attempt to reattach to the screen, you need to provide the set password.

To create a password-protected screen, run the command:

password your_password

Replace your_passowrd with a strong password of your choice.

The next time you try to reattach to the password-protected screen, you have to provide two passwords to enter – your Linux password, followed by your Screen password.

Delete Linux Screen Session

To delete your screen session you can just type exit from your session.

If you need to delete the complete screen session you can use the following command.

$ screen -X -S screen_id quit

If you have any dead sessions you can use the below command.

screen -wipe

Manage Linux Screen

Whenever you start a new screen session, it creates a single window with a shell in it.

You can have multiple windows inside a single Screen session.

To create a new window with shell type Ctrl+a c, the first available number from the range 0…9 will be assigned to it.

Before diving into the advanced features of Linux Screen, familiarize yourself with some essential key commands, Below are some most common commands for managing Linux Screen Windows:

Ctrl+a cCreate a new window (with shell).
Ctrl+a “List all windows.
Ctrl+a 0Switch to window 0 (by number).
Ctrl+a ARename the current window.
Ctrl+a SSplit current region horizontally into two regions.
Ctrl+a |Split current region vertically into two regions.
Ctrl+a tabSwitch the input focus to the next region.
Ctrl+a Ctrl+aToggle between the current and previous windows
Ctrl+a QClose all regions but the current one.
Ctrl+a XClose the current region.
Screen commands

Conclusion

Linux Screen is a game-changer for multitasking in the terminal. With its ability to create multiple virtual terminal sessions within a single window, you can effectively manage diverse tasks and streamline your command-line interactions. By mastering the installation and usage of Linux Screen, you’re equipped to enhance your Linux productivity and efficiently navigate complex tasks with ease. Whether you’re a seasoned Linux user or a beginner, integrating Screen into your workflow is a step toward becoming a more proficient and efficient terminal user.

Also Read Our Other Guides :

  • How To Use Rsync to Sync Local and Remote Directories in Linux
  • How To Get Total Inodes and Increase Disk Inode Number in Linux
  • How To Create and Use Swap File on Linux System
  • How To Use Git Version Control on Linux: For Beginner
  • The 40 Most-Used Linux Commands You Should Know
  • 6 Methods To Search For Files By Name In Linux

Finally, now you have learned how to install and use Linux Screen with commands on Linux.

Tags: LinuxScreenUbuntu

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