PHP is one of the most popular programming language for developing applications, you will find it on every web hosting server. The most popular Content Management Systems (CMSs) are written in PHP, such as WordPress, Drupal, and Joomla. One of the many reasons why PHP is well known out there is because it has numerous extensions in its default distribution, an example is OPcahce. What is Opcache and How Does it Work? Originally known as Zend Optimizer+, Opcache (introduced in PHP 5.5.0) is a powerful PHP extension built to enhance PHP performance thus boosting overall application performance. It is available as an extension through PECL for PHP versions 5.2, 5.3 and 5.4. It works by storing pre-compiled script byte-code in shared memory, thereby removing the need for PHP to load and parse…

In the world of mail servers, there are many software and technologies. Here is a list of 3 of them that you must know. Most mail servers made of Mail delivery agent (MDA) and Mail Transfer Agents (MTA). MDA software used to routes e-mail to its destination. You use MDA such as Dovecot, Qpopper, Courier, and Cyrus IMAP/POP3 servers. MTA software used to transfers e-mail between servers or computers. You use MTA such as Exim, Qmail, Sendmail, OpenSMTPD, Postfix, and others. Apart from MTA and MDA, you need to install and use Antispam, Antivirus, Webmail and other software too. You need to make sure your IP address stay clean. Apart…

Brief: This article provides you a list of best Linux command line cheat sheets that you can download without paying a single dollar. I’ll be honest with you. I am a cheat sheet fan. Especially when I am learning something new. It also helps me on topics which I know I’ll have to work on and off again. Benefits of cheat sheets When you learn something new, it’s normal that you won’t know all commands by heart. It comes by practice eventually, if you work on it continuously. Cheat sheets come handy for quick references in such circumstances. You don’t have to memorize, or Google for repetitive commands each time. A little doc can be opened in…

Today I’ll publish my top 7 Linux CLI commands which I use everyday for monitoring Linux server, This Article includes network monitoring, memory monitory and disk monitoring commands. The following command will show the list of top processes ordered by RAM and CPU use in descendant form (remove the pipeline ( | ) and head if you want to see the full list): [crayon-5cbba727b0666029255187/] Sample Output [crayon-5cbba727b066c496221661/] Find Largest Directories in Linux If you want to display the biggest directories in the current working directory, run: [crayon-5cbba727b066e326699738/] Sample Output [crayon-5cbba727b0670134931388/] Find Largest File in a folder [crayon-5cbba727b0672026487127/] Sample Output [crayon-5cbba727b0674253144275/] List Number of open connections per ip [crayon-5cbba727b0675502018127/] Sample Output [crayon-5cbba727b0677505742716/] List processes by…