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What to do when a CentOS 7 yum update fails

Package manager yum is one of the most important tools available to a CentOS 7 system administrator. If the command fails to work, due to various reasons, the update, installation and removal of packages becomes a very difficult task. While software can still be installed from RPMs or compiled from source, yum has many advantages …

How to use atop

You are probably already familiar with the system monitoring tool top or similar programs such as htop, iotop or mytop. Atop is another related command line monitoring tool that provides extended functionality. It displays more information than top and can for example report the resource usage of completed processes. The most useful feature of atop …