Unix as a Second Language
Many ways to sort file content on Linux
The Linux sort command has an impressive number of ways to sort, from alphanumeric to random. Here's a look at some of the more useful ones.
Monitoring failed login attempts on Linux
Failed logins can be legitimate human error or attempts to hack your Linux system, but either way they might flag something that warrants attention.
How to sort ps output
The ps command makes it fairly easy to sort its output by any column of data. In fact, you can sort it in the normal or reverse order. In this post, I'll present the --sort option and show how to use it. I'll also touch on how to pass...
Tagging commands on Linux
Adding a tag to a Linux command can make it a little easier to reuse it. If you're struggling to remember complex commands or important locations in the file system, tags might help you out.
Using the Midnight Commander to browse Linux directories
Midnight Commander is a powerful tool that provides an easy way to browse, compare, move, modify and manipulate files.
How to modify user-account settings with usermod
The usermod command allows you to make a lot of different changes to user accounts without having to carefully edit files like /etc/passwd, /etc/shadow and /etc/group. It's definitely worth your time to look into it.
Disowning a process in Linux
When you disown a process in bash, you keep it from being terminated when you log out and allow it to finish on its own. This post shows how to use the disown command.
How to enforce password complexity on Linux
Linux gives you lots of ways to create complexity in passwords that include a lot more than just length, such as mixing upper- and lower-case letters with numerals and punctuation marks along with other restrictions.
How to download and play YouTube and other videos on Linux
The youtube-dl tool makes it very easy to download both webm and mp4 files on Linux systems. You just need the tool and the right URLs.
Navigating your Linux files with ranger
Ranger is a great tool for providing a multi-level view of your Linux files and allowing you to both browse and make changes using arrow keys and some handy commands.
Recovering deleted files on Linux with testdisk
This post describes testdisk, one of the tools that comes in handy for recovering recently deleted files (along with fixing partitions in other ways).
How to view information on your Linux devices with lshw
The lshw (list hardware) command on Linux systems provides a lot more information on system devices than most of us might imagine is available.
Using bash’s shopt builtin to manage Linux shell behavior
The shopt builtin offers 53 settings that can alter how bash behaves. Read this post and then refer to bash's man page to follow up on how these settings might work for you.
Using the Linux stat command to create flexible file listings
The stat command isn't only for looking at file details one file at a time. It can also be used to create file listings that contain just the information you want to see – with considerably more than an ls -l command.
Enhancing the Linux command line with aliases
Using bash aliases in Linux can save time and having to remember complex commands - and it can be fun, too.
11 ways to list and sort files on Linux
Linux commands can provide details on files and show options for customizing file listings, but can also reach as deeply into a file system as you care to look.
Managing process accounting on Linux
Process accounting can provide a lot of details that can help monitor user and system activity on Linux. Here's a look at how it works and what kind of data it provides.
Word game: Finding anadromes with Linux
Using Linux commands to find words that, when reversed, turn into other words turned out to be an enjoyable mental challenge. How many can you find?
Merging and sorting files on Linux
There are quite a few ways to merge and sort text files on Linux. The command to choose depends on your data and your preferences.
Linux dominates supercomputing
The Linux operating system runs all 500 of the world’s fastest supercomputers, which help to advance artificial intelligence, machine learning and even COVID-19 research.
![An anonymous hooded laptop user is surrounded by binary code and graphed data. [security threat]](https://images.idgesg.net/images/article/2020/09/anonymous_hooded_laptop_user_surrounded_by_binary_code_and_graphed_data_hacker_bad_actor_security_threat_by_peshkov_gettyimages-1163613149_2400x1600-100858239-small.3x2.jpg)
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