Linux & Unix
How to get system-related information on the Linux command line with Neofetch
Want to share the specifics of your Linux system with someone else via the internet but don't want to go…
[SOLVED] The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key
Here is the solution if you've got the following error message when updating package lists on Debian (apt-get update): The…
How to prevent that a user deletes a file owned by root in his home directory
Even though a file is held by root and has 700 rights, if the root user saves it in another…
How to prevent a Linux system user from logging into the system
The shell setting in /etc/passwd determines whether a Linux system user may log in via the shell or over SSH.…
Get a list of all virtual hosts which are defined in all apache configuration files
Have you ever looked in the apache config files to see where a website's virtual host is defined? The apache2ctl…