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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Debian Linux 9.4 released and here is how to upgrade it
in Categories Debian Linux, Linux News last updated March 10, 2018The Debian GNU/Linux project has released an updated version of its stable Linux distribution Debian 9 (“stretch”). You must upgrade to get corrections for security problem as this version made a few adjustments for the severe issue found in Debian version 9.3. Debian is a Unix-like (Linux distro) operating system and a distribution of Free Software. It is mainly maintained and updated through the work of many users who volunteer their time and effort. The Debian Project was first announced in 1993 by Ian Murdock.
Linux/Unix desktop fun: Simulates the display from “The Matrix”
in Categories Command Line Hacks, Howto last updated January 3, 2018The Matrix is a science fiction action movie from 1999. It was written and directed by the Wachowski Brothers. The film has falling green characters on screen. The digital rain is representing the activity of the virtual reality in “The Matrix.” You can now have Matrix digital rain with CMatrix on a Linux or Unix terminal too.
Deleting all existing comment author urls in WordPress using mysql command
in Categories Command Line Hacks, Howto, Programming, Web Developer last updated December 23, 2017I 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.
How to customize title in WordPress themes using pre_get_document_title
in Categories Howto, Open Source, Programming last updated December 13, 2017WordPress version 4.4 and above use a filter called pre_get_document_title() for a customzing title for each page, post, tag, category and more. For example, I can change 404 error title using this filter. One can use the wp_title() which was formerly deprecated in version 4.4 but was returned for compatibility reasons.
Update your OpenSSL on FreeBSD 10.x/11.x to fix vulnerabilities
in Categories Howto, Open Source, Security last updated December 9, 2017FreeBSD includes software from the OpenSSL Project for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. OpenSSL has multiple vulnerabilities on a FreeBSD. Currently, no workaround is available. You need to update OpenSSL on FreeBSD version 10.x and 11.x.
Updated version of Debian Linux 8/9 has been released
in Categories Debian Linux, Linux News last updated December 9, 2017
The Debian project has announced an updated version of Debian 9 (codename “stretch”) and Debian 8 (codename “jessie”). One can get new updates merely running the apt command/apt-get command.
Monitor Linux CPU temperature, frequency, power in a graphical way
in Categories Command Line Hacks, Howto, Python last updated December 9, 2017
S-tui is a free and open source terminal UI for monitoring your computer. s-tui allows to monitor CPU temperature, frequency, power and utilization in a graphical way from the terminal. It is written in Python and need root permission to use the s-tui. It is useful for:
- Watch your CPU temperature/utilization/frequency/power
- See performance dips caused by thermal throttling
- No need to use X-server. Perfect for headless usage including Raspberry PI
Let us see how to install and use s-tui on a Linux based system.
gtop: Awesome system monitoring dashboard for Linux/macOS Unix terminal
in Categories Command Line Hacks, Debian Linux, Howto last updated December 6, 2017
I like htop interactive process viewer. Recently I found another one called gtop. It is similar to top, but fancier. Let us see how to install and use gtop on a Linux or macOS Unix based system.
Command line fun: Insult the user when typing wrong bash command
in Categories Command Line Hacks, Howto, Humour last updated November 17, 2017You can configure sudo command to insult user when they type the wrong password. Now, it is possible to abuse insult the user when they enter the wrong command at the shell prompt.