Unix Tutorial

Technical Guides and How-Tos on Linux/Unix and macOS

Unix Tutorial visudo is a tool for safely updating the /etc/sudoers file, found in most Linux systems (Ubuntu for example).

If you run your Ubuntu system behind a firewall and have to use proxy server for http and ftp access, then your apt-get …

Red Hat Enterprise Linux 8 Starting with RHEL4, the system only accepts local (socket-based) X11 server connections. …

Different UNIX-like operating systems store information about their release versions differently. If you know what OS …