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Various Modern Clocks Displaying Time in Different Time Zones Throughout the World.

Navigating a field of uncertainty and doubt questions

Tricks for getting around your Linux file system

The cd command is probably one of the first 10 that any Linux user learns, but it's not the only way to navigate the Linux file system.Here are some other ways.

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Linux firewall basics with ufw

We take a look at ufw - the uncomplicated firewall - on Linux, providing some insights and commands for making changes.

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

In this Linux tip, learn to use the ln command, which can create either type of link on Linux systems.

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Manually rotating log files on Linux

Linux system log files are by default set to rotate. Depending on the age or size, a sequence of files moves back a step, the oldest being removed and a new one taking over as the current log file. When needed, however, you can...

User ID + password / credentials / authentication

Viewing and configuring password aging on Linux

With proper settings, Linux users can be forced to periodically change their passwords. Here's how to view password aging settings and how to configure some of the settings.

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

In this Linux tip, learn how to use the pwd (present working directory) command, which can tell you where in the file system you are currently located.

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Communicating with other users on the Linux command line

Linux systems offer a number of easy commands for sending messages to other logged in users. In this post, we examine some very handy messaging tools.

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Watching activity on Linux with watch and tail commands

The watch and tail commands can help monitor activity on Linux systems. This post looks at some helpful ways to use these commands.

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Converting between uppercase and lowercase on the Linux command line

Converting text between uppercase and lowercase can be very tedious, especially when you want to avoid inadvertent misspellings. Fortunately, Linux provides a handful of commands that can make the job very easy.

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How to use tabs for autocompletion: 2-Minute Linux Tips

In this Linux tip, learn how to use tabs for autocompletion. This practice means that you don’t have to type complete file names or even complete commands – and you’ll probably avoid some typos in the process.

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

In this Linux tip, learn how to use the umask command. You can use it to set the default permissions for files that you create.

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How to find what you’re looking for on Linux with find

The find command has a huge array of options to help you locate exactly the files you're looking for on a Linux system. This post explores a series of extremely useful commands.

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

In this Linux tip, learn how to use the ls command. The ls command is one of the most basic commands. It’s used to list files and it has some very useful options.

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Digging up IP addresses with the Linux dig command

The dig command is extremely versatile both for retrieving information from domain name servers and for troubleshooting.

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Navigating man pages in Linux

The man pages on a Linux system can do more than provide information on particular commands. They can help discover commands you didn't realize were available.

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Intro to the Linux command line

Here are some warm-up exercises for anyone just starting to use the Linux command line. Warning: It can be addictive.

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Showing memory usage in Linux by process and user

There are several commands for checking up on memory usage in a Linux system, and here are some of the better ones.

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How to use the ssh keygen command: 2-Minute Linux Tips

In this Linux tip, learn how to use the ssh-keygen command. It’s used to create a set of public/private keys that you can use in place of passwords to either log into a system or run commands remotely.

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