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20th National Cybersecurity Awareness Month kicks off

Since 2004, October is National Cybersecurity Awareness Month. Here's a review of what that means, plus a list of open-source and free cybersecurity tools to consider.

By Sandra Henry Stocker
Oct 4, 2023 6 mins
Network Security Operating Systems
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How to use the Comm command

In this Linux tip, we’re going to look at the comm command – a Linux command that provides a report on the lines that are common in two text files along with those that only exist in one file or the other.

Oct 3, 2023 1 mins
Operating Systems
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how-to

Taking control of your fortunes on Linux

The fortune command might be more versatile than you realize.

By Sandra Henry Stocker
Sep 25, 2023 6 mins
Operating Systems
how-to

Using curl and wget commands to download pages from web sites

The curl and the wget commands make it easy to download content from web sites.

By Sandra Henry Stocker
Sep 20, 2023 5 mins
Operating Systems
how-to

Sorting, joining, shuffling, skipping and numbering lines on Linux

Linux provides a lot of handy commands for manipulating text files. This post explains how to use a collection of them.

By Sandra Henry Stocker
Sep 13, 2023 5 mins
Operating Systems
how-to

Using the comm command to compare files or directories on Linux

The Linux comm command makes it easy to compare a couple text files and determine if they both contain the same lines -- whether the file contents are sorted or not.

By Sandra Henry Stocker
Sep 11, 2023 5 mins
Operating Systems
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video

How to use the ignorespace command

In this Linux tip, we’re going to look at an easy way to avoid saving commands in your command history. The first thing you need to do is set your HISTCONTROL variable to ignore commands that you enter followed by a space by using the “ignorespac...

Sep 7, 2023 2 mins
Operating Systems
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video

How to omit command history with ignoredups

In this Linux tip, we’re going to look at how you can get your command history to omit commands when you enter them more than once in a row.

Sep 5, 2023 2 mins
Operating Systems
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how-to

Incrementing and decrementing numeric variables in bash

There are quite a few ways to increment and decrement numeric variables in bash. This post examines the many ways you can do this.

By Sandra Henry Stocker
Sep 5, 2023 4 mins
Operating Systems
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video

How to use the more command

In this Linux tip, we’re going to look at using the more command to view text files a selected number of lines at a time.

Aug 31, 2023 2 mins
Operating Systems
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