OpenBSD 6.3 released ( Download of the day )

in Categories Datacenter, Hardware, Howto, Networking, Open Source last updated April 2, 2018

OpenBSD version 6.3 has been released. OpenBSD is demonstrating to be an excellent server operating system. Security is more critical now than ever before. OpenBSD leads the pack when it comes to security features. OpenBSD provides a very robust and trustworthy system that comes with the cutting-edge security feature. OpenBSD 6.3 continues to offer the “multi-platform, ultra-secure operating system” experience. The OpenBSD team releases a new version every six months.
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Linux/Unix desktop fun: sl – a mirror version of ls

in Categories Command Line Hacks last updated March 31, 2018

One of the most common mistakes is typing sl instead of ls command. I set up an alias, i.e., alias sl=ls; but then you may miss out the steam train with a whistle.

sl is a joke software or classic UNIX game. It is a steam locomotive runs across your screen if you type “sl” (Steam Locomotive) instead of “ls” by mistake. Now there is a twist to older sl command.
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400K+ Exim MTA affected by overflow vulnerability on Linux/Unix

in Categories Linux News, Security last updated March 8, 2018

Exim is a free and open source message transfer agent (MTA) developed at the University of Cambridge. It is famous on Unix and Linux systems connected to the Internet. It is freely available under the terms of the GNU General Public Licence. There is a buffer overflow in base64d() of Exim MTA that allows an attacker to run code remotely. ALL versions of Exim MTA affected by overflow vulnerability i.e. CVE-2018-6789.
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Deleting all existing comment author urls in WordPress using mysql command

in Categories Command Line Hacks, Howto, Programming, Web Developer last updated December 23, 2017

I have like over 50k+ comments posted on this site. A commenter is allowed to leave their website or Github/Twitter URL in the comment section. Unfortunately, many websites are dead creating a mess. Many are just spam and nothing else. This is not good for anyone. Here is a quick way to delete all existing comment author URLs in WordPress using mysql command line option.

Book review: Mastering Vim Quickly From WTF to OMG in no time

in Categories Reviews last updated November 18, 2017


The vim editor is a free and open source text editor. It is a clone of vi text editor. Vim is extremely popular among the Linux, macOS and Unix-like system users. Vim has many commands. It comes with a pretty extensive built-in manual too. One might get lost in the built-in manual. Let us see if “Mastering Vim Quickly From WTF to OMG in no time” can help a new or experienced vim user to increase productivity.