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Shredding files on Linux

On Linux, files can be erased but still be recoverable. Here's what to do when you really want them gone.

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Linux control sequence tricks

There are a lot of control sequences available on Linux systems -- maybe even some you've never used.

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Red Hat reaches the Summit – a new top scientific supercomputer

The new supercomputer at Oak Ridge National Labs runs Red Hat Enterprise Linux and heralds a new level of cooperation between vendors.

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Comparing files and directories with the diff and comm Linux commands

The Linux comm command makes it easy to compare files or the contents of directories with its columnar output.


Copying and renaming files on Linux

There's more to copying and renaming files on Linux than cp and mv. Try some commands and strategies that might surprise you and save you some time.


How to use logger on Linux

The logger command provides an easy way to add messages to the /var/log/syslog file from the command line or from other files.

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22 essential Linux security commands

If you're looking after the security of Linux systems, these are the commands you must know.

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How to speak Linux

We might all agree on the command line, but start talking about Linux, and we might find that the rules of how to pronounce the names of Unix commands are not universal.

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Blacklisting modules on Linux

Blacklisting modules prevents them from being loaded and used, and it is sometimes an important step in keeping a system running properly.


Customizing your text colors on the Linux command line

The colors used on the Linux command line are intended to provide an easy way to identify files by type. You can change them, but you should have a good reason before you do.

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Review: Observium open-source network monitoring won’t run on Windows but has a great user interface, price

Observium’s network monitoring software is mature platform with good documentation, but won’t export data from its Web interface.

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How to share files between Linux and Windows

In spite of the huge differences between Linux and Windows, sharing files between the systems is surprisingly easy. Here’s a look at two very different ways to make this happen.

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How to do math on the Linux command line

How to use the expr, factor, jot, and bc commands to do math calculations on Linux systems.


Finding what you’re looking for on Linux

How to use the find, locate, mlocate, which, whereis, whatis, and apropos commands to find files on Linux systems.

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Fedora 28 beta is ready for you to test

A new version of the Fedora Linux distro, Fedora 28, was released in its beta version. Here's a look at some of its new features.

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Simplifying Linux with ... fish?

Some see a lot of promise in the evolution of "fish" on Linux -- a shell with a some unusual behaviors.


Working with calendars on Linux

With calendars on Linux, you can get more than just reminders of what day it is. Commands such as date, cal, ncal and calendar provide helpful information.


Reviewing logins on Linux

The "last" command provides some easy ways to see who has been logging into your system and when, but with a little more work, you can ask it to report on a specific time period.

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How to check your network connections on Linux

The ip command provides a lot of information on network interfaces. Here's some advice to help you understand what it's telling you.

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Linux command history: Choosing what to remember and how

Linux command history is not just about repeating commands. You can selectively decide what to remember and whether to record the date and time your commands were used.

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