Knowledge for the World

linux

What is the dirty cow exploit?

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The Dirty Cow exploit takes advantage of a recently discovered vulnerability in the Linux kernel that has existed since the inception of the operating system.

Awk basic examples

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Learn the basics of awk with these simple examples. If you need more background information on the awk command, check out the guide What is awk?.

What is awk?

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According to the manual, awk is a pattern-directed scanning and processing language. This quick definition provides a few insights. First, awk is a scanning and processing language.

How to colorize your logs with CCZE

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If you spend a lot of time staring at log files, you might want to consider installing CCZE. CCZE is a tool that color highlights your log files making them much easier to read.

How to test sendmail from the shell

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Sendmail is an open source smtp server. Many different languages and frameworks interface with sendmail, and when debugging it's good to be able to quickly test whether or not sendmail is working.

How to install zsh (Z shell)

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As much as I loved the Bourne Again Shell, I feel like I've been living in the stone ages. I recently switched to the Z shell and my life is more enjoyable.