When I log into a Linux computer, I either cannot run software (e.g. command not found), the top bar/desktop is missing, or am automatically logged out. Why?

There are a few issues that can cause this behavior:

  1. If there is a problem with your Linux dotfiles (i.e. environment configuration files), your session may not be able to start properly. You can reset them by logging into a CAEN login server using SSH, and typing the following command:
    Once the command completes, log out and log back in again. This will rename your old dotfiles to .dotfile.old or .dotfile.older, and copy the CAEN standard dotfiles into your Linux home directory. The next time you log into a Linux computer, your environment will use the CAEN default settings; as if you were logging into a Linux computer for the first time.


  1. ITS AFS Personal Storage is used as your home directory on CAEN Linux computers. When you are over your AFS storage quota, Linux cannot write necessary session information to your home directory, and may prevent you from logging in. Visit this article for tips on reducing your AFS quota usage.


  1. Many software applications are restricted based on an individuals role at the College and/or where they are located when attempting to run software. Refer to our online Software Restrictions for Linux Users page for more information.


Article ID: 5054
Mon 5/3/21 4:31 PM
Mon 5/17/21 12:15 PM