Chrony is a Network Time Protocol's implementation that is more faster and robust than traditional NTPD. It have the ability to synchronize systems with more accuracy and reliability.

Security-Enhanced Linux or Simply SELinux is a Linux kernel security module that provides a mechanism for supporting access control security policies, including mandatory access controls.

The official of GPG keys of MySQL are expired so the new installations and upgrades from the official package repository are failed with the following message.

Linux snippet to install Python LDAP on various Linux distributions.

HTTP protocol defines several Methods to access and modify content served on a server. Apache the most commonly use web server to date. It provide 9 HTTP methods. Most of the web applications and website use only 2 or 3 methods i.e. GET,POST and sometimes HEAD method.