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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.

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

In this Linux tip, learn how to use the factor command. It’s not one that you will likely need very often, but it can be very useful when you’re doing math on the command line. It provides the factors for any number you offer as an...

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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...

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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.

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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.

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

In this Linux tip, learn how to use the disown command. It provides a way to detach a process you’re running from your login session so that it isn’t killed (hung up on) when you log out. This means that the process can continue...

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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.

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How to use ranger: 2-Minute Linux Tips

In this Linux tip, learn how to use ranger. It’s a tool that allows you to easily browse files in a terminal window, but in a much different manner than you normally would on the command line.

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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.

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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.

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

In this Linux tip, learn how to use the tar command. It’s used to create (and extract contents from) file archives. The name “tar” stands for “tape archive” though “tape” is rarely part of the equation anymore.

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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.

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

In this Linux tip, we’re going to look at the lscpu command that provides a lot of information on your system’s CPU or CPUs.

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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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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).

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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.

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

In this Linux tip, learn how to use the unset command. It’s a command that removes an environment variable from your current login session.

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

In this Linux tip, learn how to use the look command. It allows you to easily pick out lines that begin with a given string from a file that you specify. The look command only matches beginnings of lines and doesn’t work with wild...

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