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How to send email from the Linux command line

Linux offers several commands that allow you to send email from the command line. Here's look at some that offer interesting options.

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How Linux can help with your spelling

Whether you're struggling with one elusive word or checking a report before you send it off to your boss, Linux can help with your spelling.


NVMe on Linux

In case you haven't yet noticed, some incredibly fast solid-state disk technology is as available for Linux as it is for other operating systems.

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A deeper dive into Linux permissions

Sometimes you see more than just the ordinary r, w, x and - designations when looking at file permissions on Linux. How can you get a clearer view of what the uncommon charactrers are trying to tell you and how do these permissions...

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How to use the nslookup command: 2-Minute Linux Tip

In this Linux tip, learn how to use the nslookup command. This command provides information on naming services and demonstrates how your system looks up hostnames prior to connecting to them.

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How to use the last command: 2-Minute Linux Tip

In this episode of 2-Minute Linux Tips, Sandra demonstrates the last command. It that shows recent logins – such as the last time you logged in but with the logins in reverse order.

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4 vulnerabilities and exposures affect Intel-based systems; Red Hat responds

Red Hat issued a security advisory on recently disclosed CVEs (common vulnerabilities and exposures) in Intel microprocessors.

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When to be concerned about memory levels on Linux

Memory management on Linux systems is complicated. Seeing high usage doesn’t necessarily mean there’s a problem. There are other things you should also consider.

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How to use the bc command: 2-Minute Linux Tip

In this Linux tip, learn how to use the bc command – it’s a command line calculator. You can use this command to easily solve equations.

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Red Hat Summit 2019: RHEL 8 arrives

At Red Hat Summit 2019, Red Hat announced the availability of Red Hat Enterprise Linux (RHEL) 8, with support for the Red Hat Container Toolkit, and the Universal Base Image.

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How to use the lsblk command: 2-Minute Linux Tip

In this episode of 2-Minute Linux Tips, learn the lsblk command. It provides information on block devices -- such as hard disks where you read and write one block of data at a time.


Looking into Linux modules

The lsmod command can tell you which kernel modules are currently loaded on your system, along with some interesting details about their use.

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Must-know Linux Commands

A compilation of essential commands for searching, monitoring and securing Linux systems - plus the Linux Command Line Cheat Sheet.

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How to use the chown command: 2-Minute Linux Tip

Learn how to use the chown command. It changes a file’s owner or both owner and group.


How to identify same-content files on Linux

Copies of files sometimes represent a big waste of disk space and can cause confusion if you want to make updates. Here are six Linux commands to help you identify these files.

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

Learn how to use the chmod command – the command for changing permissions on files. The only tricky part is understanding that there are two ways to represent file permissions.

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How to identify duplicate files on Linux

Some files on a Linux system can appear in more than one location. Follow these instructions to find and identify these "identical twins" and learn why hard links can be so advantageous.

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Working with variables on Linux

Variables often look like $var, but they also look like $1, $*, $? and $$. Let's take a look at what all these $ values can tell you.

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