Resolution of a Composer Manager error, Composer's install command was required to be run in a Drupal 7 website.
Resolution of an error in the Dovecot configuration file regarding the unknown protocol sieve is explained.
Resolution of the error Dovecot: imap Error: open (/var/mail/username) failed observed on a Postfix mail server site.
Solution to the "Invalid Gradle JDK configuration found" problem faced while opening an Android project in Studio is given.
The ip command is used for IPv4 and IPv6 network configuration. It replaces the previous ifconfig and other similar commands.
Step by step instructions for connecting two computers back to back using an Ethernet LAN cable, using the first computer as a router.
logrotate is for rotation of log files daily, weekly, monthly, or when a log file becomes bigger than the predefined limit.
Installation and configuration steps for nginx HTTP server and associated packages, apc and PHP-FPM, are given.