How To Use screen And script command In Linux

ZACH | April 23, 2011

Linux Screen Command

Screen is a terminal multiplexer, using this you can run any number of cnsole-based-applications, interactive command shells, course-based applications, etc. You can use screen to keep running program after you accidentally close the terminal. Or even after you log out and later resume right where you were. You can start screen just by typing screen at command prompt. You will be greeted welcome message.

Example: 1

[root@localhost ~]# screen

This screen command will stat a new window within the screen.

Example: 2

[root@localhost ~]# screen-S aloft 1

Above command will start new window within the screen and also gives name of the window (aloft)

Example: 3

[root@localhost ~]# screen –ls

Above command displays crrent open screens, including those running in the background.

Example: 4

[root@localhost ~]# screen mc

The Midnight commander program will appear.

Example: 5

[root@localhost ~]# screen Top

The top program will start and displays output to the command line

Linux Script Command

This script command is very helpful for system admin. If any thing problem occurs to the system, its very difficult to find what command were executed previously. Hence System admin knows importance of this script command. Script command keeps action log for various tasks. Script records everything in a session: things you type and things you see. And also records color

Example: 1

[root@localhost ~]# script
Script started, file is typescript

By default, it writes to a file called typescript in the current directory. After completion of your task you can enter exit. This will close down the script session and save the file

Options
-a appends the output to file or typescript retaining their previous contents

Example: 2