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Red Hat announces container flaw CVE-2019-5736

A flaw in runC and Docker may allow access to underlying file systems when SELinux is not enabled.

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Linux tip: How to use the hostnamectl command

In this Linux tip, we look at the hostnamectl command. It’s a command that provides information on a particular system – including but not limited to its hostname – and even allows you to make some changes.


How much memory is installed and being used on your Linux systems?

Several commands report on how much memory is installed and being used on Linux systems. You can be deluged with details or get a quick and easy answer, depending on the command you use.

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The Linux command-line cheat sheet

This select set of Linux commands can help you master the command line and speed up your use of the operating system.

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Linux tip: How to use the pstree command

In this tip, we look at the pstree command. It allows you to get a listing of running processes that clearly indicates the relationship between them.

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How to monitor activity on your Linux server

The watch, top, and ac commands provide some effective ways to oversee what is happening on your Linux servers.

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SUSE releases enterprise Linux for all major ARM processors

SUSE officially releases its enterprise Linux distribution, SUSE Linux Enterprise Server (SLES), for all major ARM server processors.

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Linux systems: Scraping up information about apt updates

Where can you find information on Linux updates performed with apt commands? Check the /var/log/apt directory.


Zipping files on Linux: the many variations and how to use them

There are quite a few interesting things that you can do with "zip" commands on Linux other than compress and uncompress files. Here are some other zip options and how they can help.

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First step to becoming a cybersecurity pro: Linux

If you're gearing up to be a cybersecurity pro, you must have Linux skills. Linux Basics for Hackers will quickly get you up to speed.

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How ASLR protects Linux systems from buffer overflow attacks

ASLR is a memory exploitation mitigation technique used on both Linux and Windows systems. Learn how to tell if it's running, enable/disable it, and get a view of how it works.

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Linux commands for measuring disk activity

Linux distributions provide quite a few useful commands for gauging disk activity. In this post, we'll look at some handy commands and useful options.

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Open-source containers move toward high-performance computing

Thanks to the efforts of Sylabs, open-source containers are starting to focus on high-performance computing—providing new ways of working for enterprise IT organizations.


Working with tarballs on Linux

Learn how to create tarballs on Linux systems to back up and manage group files on Linux system.

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How Java has stood the test of time

Java has been one of the top two programming languages for the past 10 years. How has it stood the test of time? Good design and continuous innovation have a lot to do with it.

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Using the Linux ss command to examine network and socket connections

The Linux ss command replaces the older netstat and makes a lot of information about network connections available for you to easily examine.

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Linux will seem to be everywhere in 2019

Faster, more versatile and secure, Linux gets better every year. Let's take a look at some of the highlights expected in 2019.


Selectively deploying your superpowers on Linux

The sudo command allows privileged users to run all or selected commands as root, but understanding how it works and doesn't work is a big help.

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