• Home
  • Store
  • Blog
  • Contact
  • Home
  • Store
  • Blog
  • Contact
  • #linux
  • |
  • #commandline
  • |
  • #softwareengineering
  • |
  • #embeddedsystems
  • |
  • #compilers
  • ...
  • View All >>

Intro To 'logout' Command In Linux

2024-11-13 - By Robert Elder

     I use the 'logout' command to log out from a login shell:

logout

Return To Login Prompt

     I can use the 'logout' command to log out from the shell on the Linux command prompt:

logout

     When I run the 'logout' command from a login shell, I'll be prompted to provide my credentials again before I can regain access to a command prompt:

Login Shells Vs. Non-Login Shells

     If I run the 'logout' command from a graphical shell, I'll see an error message:

     According to the bash shell documentation:

man bash
...
INVOCATION
       A login shell is one whose first character of argument zero is a -, or one started with the --login option.
...

     Here is the value of argument zero in a raw tty environment:

     Here is the value of argument zero in a desktop terminal window, followed by the value when logged into a remote machine over SSH:

     And that's why the 'logout' command is my favourite Linux command.

A Surprisingly Common Mistake Involving Wildcards & The Find Command
Published 2020-01-21
$1.00 CAD
Terminal Block Mining Simulation Game
A Guide to Recording 660FPS Video On A $6 Raspberry Pi Camera
Published 2019-08-01
The Most Confusing Grep Mistakes I've Ever Made
Published 2020-11-02
Use The 'tail' Command To Monitor Everything
Published 2021-04-08
An Overview of How to Do Everything with Raspberry Pi Cameras
Published 2019-05-28
An Introduction To Data Science On The Linux Command Line
Published 2019-10-16
Using A Piece Of Paper As A Display Terminal - ed Vs. vim
Published 2020-10-05
Join My Mailing List

Privacy Policy
Why Bother Subscribing?
  • Free Software/Engineering Content. I publish all of my educational content publicly for free so everybody can make use of it.  Why bother signing up for a paid 'course', when you can just sign up for this email list?
  • Read about cool new products that I'm building. How do I make money? Glad you asked!  You'll get some emails with examples of things that I sell.  You might even get some business ideas of your own :)
  • People actually like this email list. I know that sounds crazy, because who actually subscribes to email lists these days, right?  Well, some do, and if you end up not liking it, I give you permission to unsubscribe and mark it as spam.
© 2025 Robert Elder Software Inc.
Privacy Policy      Store Policies      Terms of Use