Unix as a Second Language
Examining network connections on Linux systems
Linux systems provide a lot of useful commands for reviewing network configuration and connections. Here's a look at a few, including ifquery, ifup, ifdown and ifconfig.
Looking into Linux user logins with lslogins
The lslogins command can help you look into details of user accounts and login activity
Automating responses to scripts on Linux using expect and autoexpect
The expect command can make running scripts a lot easier, especially if you need to run them repeatedly or when you're at home asleep.
2021 New Year's resolutions for Linux users
Linux has a wealth a powerful tools to make working with it easier and more productive, and here are some tips for taking advantage of them.
Checking network connections with arp and ip neigh
In Linux, the arp and ip neigh commands provide easy ways to check your local network.
Searching Wikipedia on the Linux command line with wikit
Wikit is a clever command for running Wikipedia searches from the Linux command line. It can help you run searches and save the output in text files. Take a look at how easily it works and learn what you need to know to get the...
Using the Linux arping command to ping local systems
The arping command can ping local systems to find out whether they are responsive, and with the help of scripts, can ping specific IP-address ranges.
Creating your own cowsay messenger
Want to add a personal image or company logo for using with cowsay? It's easier than you might think to become a cowsay Picasso.
Using pidof and pgrep to list process IDs
The pidof and pgrep commands make selecting and using process IDs on the Linux command line painless.
Fetching Linux system details with screenfetch and neofetch
Here's how to use screenfetch and neofetch tools to display some of the most important configuration information on your Linux system.
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.
How to keep processes running after logging off in Linux
When you disown a Linux 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.
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