Linux Cheat Sheet

Linux Cheat Sheet

In this tutorial, we will list various practical Linux commands to be used only as a reference guide and by experienced Linux users. Not all Linux commands will be available on your system by default so consider installing the relevant package before use.

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perl: warning: Falling back to the standard locale error message on Linux

Falling back to the standard locale – Solution

If you are trying to use the perl command in your terminal or execute a script coded in the language, you may encounter the Falling back to the standard locale error. This indicates that your Linux system is missing a particular software package that Perl relies on, or the software has become corrupted or misconfigured. In this tutorial, we will show you how to remedy the error and get your perl command working again.

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Pax command examples on Linux

Pax command examples on Linux

pax is an archive utility somewhere between cpio and tar. This is just because it is independent of the specific archive format, and supports a wide variety of different archive formats. It can perform simple tasks as creating a compressed archive of a selected directory or it can as much easily create a daily incremental backup.

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Introduction to Tmux

Introduction to terminal multiplexer Tmux

Tmux is a terminal multiplexer: it let us run and manage multiple terminal sessions from a single screen. This is specially useful when connecting to remote machines using ssh, since, among the other things, it allows us to keep processes started from those terminals running in the background when we disconnect from the session (or logout and close the remote secure shell altogether), letting us re-attach to it at a later time.

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Retrieve Weather information using Linux command line

Retrieve Weather information using Linux command line

Although most Linux users will use a GUI tool to retrieve weather information, it is also possible to do get a weather forecast from the command line. Whether you are stubborn command line user or you wish to automate flower watering using your Linux system and cron, there are several different options that can do the job. Some tools even allow you to retrieve information such as current outside temperature, wind, pressure, humidity, altitude, and more, directly from your Linux terminal.

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Ubuntu 22.04 GPG error: The following signatures couldn’t be verified

Ubuntu 22.04 GPG error: The following signatures couldn’t be verified

The Ubuntu 22.04 GPG error: The following signatures couldn't be verified is the most common error when attempting to include third party package repositories to the apt package manager. The GPG error should rather be treated as a warning against potential package installation from unknown sources. Therefore, the GPG error message prompts the user to verify and manually import the third party signature belonging to relevant package developer.

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Managing kernel modules on Linux

Basic Linux Kernel commands for module administration

The kernel of a Linux system is the core that everything else in the operating system relies on. The functionality of the kernel can be extended by adding modules to it by use of a specific Linux kernel commands. As such, a user can fine tune their kernel settings by enabling or disabling modules. This level of granular control is one of the many reasons why users love Linux in the first place.

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Installing and using the ifconfig command on Debian

How to install missing ifconfig command on Linux

Most of us longtime Linux users have the ifconfig command seared into our brain, after years of repetitive use. It comes as a shock to some when they type the command and are met with an error message (ifconfig command not found). Indeed, the command has become deprecated, but it’s still possible to install ifconfig command.

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Linux command line presentation

Linux command line presentation

There is no need to install tons of software in order to create a nice and informative presentation. tpp, which stands for Text Presentation Program is a simple to use command line presentation tool which allows you to create a fancy text based slide show presentation and share it with your colleagues or students as an ordinary ASCII text file. tpp utilizes ncurses, and it supports colors, slide-in, source code output, animated command line execution and a real time command executions all available from within your terminal.

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