How-Tos

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How to use the grep command to cheat in Wordle: 2-Minute Linux Tips

In this Linux tip, learn how you can use the grep command to cheat when you play Wordle. Linux systems can be very helpful in this because of the many commands it provides and the fact that it includes a lengthy words file.

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Extracting substrings on Linux

Linux provides a nice selection of commands for pulling substrings from text, but each has its own way of working.

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How to use the strace and ltrace commands: 2-Minute Linux Tips

In this Linux tip, learn how to use the strace and ltrace commands. They provide information on the system and library calls that a Linux process makes and this information can help when you're troubleshooting a process that's not...

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Running a Linux terminal in your Windows browser

Here's an introduction to running a Linux terminal inside a browser and some of the tools available to you.

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Using strace and ltrace to help with troubleshooting on Linux

strace and ltrace provide a flood of information about system and library calls being made by Linux processes, and sorting through it all can help discover the cause of problems.

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How to cheat on Wordle using Linux

Figuring out Wordle can be a lot of fun, but if it gets too frustrating, this Linux bash script can be your friend. Enjoy taking a look at how the cheating process works.

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How to set up quick functions to run calculations: 2-Minute Linux Tips

In this Linux tip, we’re going to look at a simple way to set up a quick function that allows you to run calculations a lot more easily than usual.

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Using whereis, whatis, and which to find out about commands on Linux

The whereis, whatis and which commands can provide information on Linux commands, but in spite of names that appear related, they provide very different answers.

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Creating a quick calculation function on Linux

Need to perform a long series of calculations? Let's look at a cool trick for making it easier.

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How to use the && (AND) and || (OR) operators

In this Linux tip, we’re going to look at the && (AND) and || (OR) operators and how they can be used.

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Demystifying &&, ||, and ! on Linux

&&, || and ! operators can run tests and take actions based on the test results, but they can be a little tricky until you understand the logic.

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How to use the awk command | 2-Minute Linux Tips

In this Linux tip, we look at an awk command that you can use to remove duplicate lines from text files – even when those lines aren't consecutive.

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2 ways to remove duplicate lines from Linux files

Linux awk and uniq commands offer options for cutting out duplicate lines from Linux files.

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How to use the btrfsck command

In this Linux tip, we’re going to look at the btrfsck command. It provides file system checking for btrfs file systems – sometimes referred to as the "better" file systems, but actually named for its B-tree underpinnings.

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Using the btrfsck file-checing command on Linux

The btrsfck command allows you to check the integrity of a btrfs file system. As file systems migrate to this newer file system format, this command is increasingly important.

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2-Minute Linux Tips: How to use the date command

In this Linux tip, we’re going to look at using the date command to run tests. You can always use the date command to see what day it is, but you can also use it in scripts to test what time, day of the month or month of the year it...

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Using the ldd command on Linux

The ldd displays the shared object files that a particular Linux command needs to run.

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Using fail2ban on Fedora

Fail2ban can detect attempts to connect to authenticated services such as ssh and put the offending connections in "jail". This article provides information on how to install, configure and test the tool on Fedora.

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