Error – mount unknown filesystem type ‘lvm2_member’ [Fix]
“Sometimes all bad things will happen at the same time” – I remembered this quote on a night when my...
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Change PDF Metadata from Linux Command Line
PDF Metadata generally contains information about the PDF document – such as Title, Author, MIME type, creator, keyword, pdf version,...Find which package the command belongs to in CentOS
Question: I generally use rpm -qa | grep command to find which package the command belongs to. However, the grepped...How to fix Unable to find a match: policycoreutils-python on RHEL/CentOS 8
While I was trying to install GitLab on CentOS 8, encountered the below error: Unable to find a match: policycoreutils-python....System-wide Crypto Policies in CentOS 8 [Explained]
Can we assume that people who set up systems or software are experts in their field and they do understand...Virtual Machines menu missing in Cockpit Interface? [Fix]
Virtual Machines menu missing in the Cockpit interface? This article will help you to fix the issue. Recently, I started...Find number of Lines of Code from GitHub Repository
How many lines of code did you write? Well, that was the question asked by one of the interviewers in...Using multiple patterns at once with Sed command
Here’s a question from one of our regular readers Mr. Manish. His question is, how to use multiple patterns at...Mistyped ‘ls’ command as ‘sl’ – Cure your bad habit of mistyping!
Mistyping a command is common; for example, typing ‘sl‘ instead of ‘ls‘ is very common. But this mistyping resulted in...No module named Cython and Running cythonize failed [Fix]
I have been using Websockify to allow the browser to connect to any application or service on a Linux machine....Cannot compile Python.h – Websockify installation Error
Question: While installing Websockify, I encountered the error: SystemError: Cannot compile Python.h. Below is the complete error #python3.6 setup.py install...PHP 7.4.3 Configure Errors – libpng, libjpeg, freetype-config, recode not found
Question: I was trying to compile PHP 7.4.3 from the source with GD library support. Unfortunately, the configure script failed...Create virtual environment for different Python versions using Conda
In our earlier article, we had shown how to install multiple versions of python without breaking System tools and Create an...How to print Stdout of a command in reverse order on a Linux Shell
Recently encountered a challenge to display the standard output (stdout) of a Linux command in the reverse order. For eg;...Unable to generate Graphical Charts in RT [Solution]
All of a sudden I was not able to generate graphical charts in Request Tracker, which was working earlier! The...Automatically start OpenCA service via Systemd in CentOS 7
OpenCA service can be started using the SysVinit script located inside openca/etc/init.d folder. However, the script has to be started...How to Install phpize in Ubuntu?
Question: I got an error phpize not found while installing PHP-SSH2 extension on Ubuntu. How to install phpize in Ubuntu?...Fix Sub-Process /usr/bin/dpkg returned an error code(1)
I encountered an error “Sub-Process /usr/bin/dpkg returned an error code (1)” while installing a Single sign-on package called Gluu Server....How to Delete First/Last ‘n’ lines from command output in Shell?
One of my colleague came up with a query – How to Delete First/Last ‘n’ lines from the output of...Error : DNS Propagation check Token Mismatch [Solved]
One of my client asked me to update DNS entry of his domain at Namecheap. After updating DNS, I checked...