How to customize title in WordPress themes using pre_get_document_title

Posted on in Categories Howto, Open Source, Programming last updated December 13, 2017

WordPress 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.

Monitor Linux CPU temperature, frequency, power in a graphical way

Posted on 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:

  1. Watch your CPU temperature/utilization/frequency/power
  2. See performance dips caused by thermal throttling
  3. 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.

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

Posted on 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.

Download of The Day: Fedora Linux 27

Posted on in Categories Linux News last updated November 15, 2017

Fedora Linux version 27.0 has been released ( jump to download ) after many months of constant development and available for download in various media format. Fedora 27 is a free and open source operating system includes various new features such as GNOME 3.26, LibreOffice 5.4, glibc version 2.26, Node.js 8.x, Ruby on Rails 5.1, Golang 1.9 and more.
Continue reading “Download of The Day: Fedora Linux 27”

How to record statistics about a Linux machine’s uptime

Posted on in Categories Command Line Hacks, Hardware last updated November 15, 2017

Linux/Unix sysadmins have a weird obsession with server uptime. There is a xkcd comic devoted to this subject where a good sysadmin is an unstoppable force that it stands between the forces of darkness and your cat blog’s servers.
Fig.01: Devotion to Duty https://xkcd.com/705/
One can tell how long the Linux system has been running using the uptime command or w command or top command. I can get a report of the historical and statistical running time of the system, keeping it between restarts using tuptime tool. Like uptime command but with the more impressive output. Recently I discovered another tool called uptimed that records statistics about a machine’s uptime. Let us see how to get uptime record statistics using uptimed and uprecords on Linux operating system.

Improve your bash/sh shell script with ShellCheck lint script analysis tool

Posted on in Categories Command Line Hacks, Howto, Programming last updated November 9, 2017

ShellCheck is a static analysis tool for shell scripts. One can use it to finds bugs in your shell scripts. It is written in Haskell. You can find warnings and suggestions for bash/sh shell scripts with this tool. Let us see how to install and use ShellCheck on a Linux or Unix-like system to enhance your shell scripts, avoid errors and productivity.