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

In this Linux tip, learn how to use the shuf command -- short for “shuffle”. It randomly rearranges lines from a file or output that is sent to it.

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

In this Linux tip, learn how to use the nl command. It stands for “number lines” and it does just that.

How to install Apache on Fedora: 2-Minute Linux Tips

In this Linux tip, learn how easy it is to install Apache on Fedora. The first thing you need to do is run a command to install the software. Then, you can run other commands to ensure it starts when your system reboots, to view Apache processes, to uninstall it and more.

How to ask a Linux command for help: 2-Minute Linux Tips

In this Linux tip, learn how to ask a Linux command for help. You can type the command you want to know about and then add --help. What the command should send back is an explanation of the command's options, maybe a usage example and something about the exit status.

How to use the bzcat and zcat commands: 2-Minute Linux Tips

In this Linux tip, learn how to use the bzcat and zcat commands. They allow you to look at the contents of files compressed with the bzip2 and gzip commands without having to uncompress the files first. Instead, these commands uncompress the files and send the output to standard out while the compressed files are left intact.

How to use the bash shell debugging mode: 2-Minute Linux Tips

In this Linux tip, learn how to use bash shell's "debugging mode". It can help you pinpoint problems, especially in long or complicated scripts.

How to use exiftool: 2-Minute Linux Tips

In this Linux tip, learn how to use exiftool. It's an app that you can install on your Linux system to pull metadata from jpg and png files. That metadata provides information such as the date the image was created or last modified, the image size in pixels and the image resolution.

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

In this Linux tip, learn how to use the help command. It's a command that provides useful information on bash "builtins". Those are commands that are built into, in other words "part of" the bash shell, not executables on their own.

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

In this Linux tip, learn how to use the traceroute command. It reports on the route taken to reach a remote system and provides timing details for each "hop" along the way (the time between routers).

How to use speedtest: 2-Minute Linux Tips

In this Linux tip, learn how to use the tool called speedtest. It allows you to check the speed of your connection to your Internet provider. The tool is not installed on Linux systems by default, but is easy to find and install.

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

In this Linux tip, learn how to use the cat command. It's one of the most basic Linux commands, though it's used for two very different operations and not everyone is likely familiar with the second.

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

In this Linux tip, learn how to use the blkid command. It gives you a very useful view of block devices on your Linux system. First, it shows the devices (e.g., /dev/sda1). It shows the UUIDs (the 128 bit long "universally unique identifiers") associated with each of them, the block sizes, the file system types and, when available, the PARTUUIDs.

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

In this Linux tip, learn how to use the ps command. It displays information on running processes. If you want to see only certain processes, you can pass the output of a ps command to grep and specify what you want to see – for example, by username or process name.

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

In this Linux tip, learn how to use the nmap command. It's generally used for security auditing, but provides interesting and useful information on systems connecting too your local network.

How to use the more and less commands: 2-Minute Linux Tips

In this Linux tip, learn how to use the more and less commands. They each allow you to browse the content of text files.

How to use the head and tail commands: 2-Minute Linux Tips

In this Linux tip, learn how to use the head and tail commands. They're basic commands that every Linux user should know. The head command is generally used to display the top lines in a text file, and the tail command shows the last lines in a file.

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

In this Linux tutorial, learn how to use the pi command. You probably won't need it very often, but, if you need to calculate pi to some arbitrary number of digits, you'll probably be surprised at how easy this can be.

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

In this Linux tip, learn how to use the rig command. It randomly generates name, address and phone number listings. It's useful when you're testing an application and need hundreds or thousands of addresses to make sure that it works correctly.

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

In this Linux tip, learn how to use the lslogins command. It provides some useful details on user accounts and logins. In its simplest form, you could just type lslogins, but without using sudo, some of the details you'll probably want to see won't be available because the files in which it's stored won't be readable.

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

In this Linux tip, learn how to use the autoexpect command. You can use it to build expect scripts that let you run scripts without having to provide answers interactively.

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