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How to background a process: 2-Minute Linux Tips

In this Linux tip, learn how you can move a running task into the background and what that means. Once you use the bg command, you have the ability to run other commands.

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Locking and unlocking accounts on Linux systems

There are times when locking a Linux user account is necessary and times when you need to reverse that action. Here are commands for managing account access and what's behind them.

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

In this Linux tip, learn how to use the lsof (list open files) command. To properly list all open files, you should use sudo. Otherwise you’re likely to run into a lot of Permission Denied warnings.

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How AppArmor can protect your Linux system

AppArmor is a Linux-kernel security module that offers unique benefits.

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Generating numeric sequences with the Linux seq command

The Linux seq command can generate lists of numbers and at lightning speed. It's easy to use and flexible, too.

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How to use apparmor: 2-Minute Linux Tips

In this Linux tip, learn about apparmor. It’s a security module that runs by default on certain Linux systems – like newer Ubuntu and Debian. Apparmor enforces restrictions using file system paths while SELinux applies security labels...

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

In this Linux tip, learn the wget command. It makes downloading pages from web sites – even recursively – very easy. Keep in mind that this command downloads whatever html code defines the page.

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Unix is turning 50. What does that mean?

Unix time, also known as 'epoch time,' is the number of seconds that have passed since Jan 1, 1970. As Unix turns 50, let's take a look at what worries kernel developers.

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

In this Linux tip, we’re going to look at the du command that reports on disk usage – whether individual files or directories.

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How to tell if you’re using a bash builtin in Linux

A built-in is a Linux command that's part of whatever shell you're using. Can you tell what commands are built-ins and which are not?

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

In this Linux tip, we’re going to look at the split command that breaks files into pieces --according to your instructions if you like -- and gives the pieces sequential names.

How to use the Linux uniq command

The uniq command in Linux is valuable for finding out who’s logged into a server

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7 ways to remember Linux commands

Linux commands run from the nearly obvious to the very complicated, but there are many ways that you can easily remember and use even the most obscure commands.

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Breaking Linux files into pieces with the split command

Some simple Linux commands allow you to break files into pieces and reassemble them as needed. In this post, we'll look at the split command and some of its more useful options.

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Counting down the days in Linux using bash

Need to know how many days there are before some important event? Let bash and the date command help with that!

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

In this Linux tip, learn how to use the date command. In its simplest form, it provides the date and time in a nice format, including the time zone.

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Displaying dates and times your way in Linux

The Linux date command provides more options for displaying dates and times than you can shake a stick at (without hurting your wrist anyway). Here are some of the more useful choices.

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The many faces of awk

The awk command provides a lot more than simply selecting fields from input strings, including pulling out columns of data, printing simple text evaluating content – even doing math.

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