Do you want to run a Windows software on Linux? Or optimize your costs by running several virtual servers on the same hardware? In those cases, like in many other ones, virtualization is the technology to leverage.

But with so many different virtualization technologies readily available today, which one is the best for YOUR needs?
yesik.it/VIRT101

`jq` is the tool to know for anyone having to process JSON logs or data.

stedolan.github.io/jq/

If you like `sed` you will like `jq`!

Want to know the oldest file in your disk?

find / -type f -printf '%TFT%.8TT %p\n' | sort | less
(should work on any Single UNIX Specification compliant system)

Looking for an explanation of what is the kernel and how it relates to userspace applications?
Take a look at that video:
yesik.it/EP09


In the Bash, pressing "ctrl-x ctrl-v" will display its version informations.

ostechnix.com/4-easy-ways-to-g

My preferred :
openssl rand 14 -base64
gpg --gen-random --armor 1 14

... but the passwords are not easy to remember. A good argument to use a password manager.

`less -R` will handle gracefully ANSI "color" escape sequences:
ls --color=always /tmp | less -R

`nagios` popularity according to Google Trend (normalized to max 100)

Can't you see a pattern here?

BTW, by what have you replaced Nagios? If you did it, of course...

In JavaScript the "empty" regular expression literal is written `/(?:)/` since the parser would erroneously take `//` as the start of a single-line comment

ecma-international.org/ecma-26

20 files to rename. 5 seconds per file. 1"40 of boring work?
No: 15 seconds if you know the right command
yesik.it/EP04

From a POSIX shell `$OLDPWD` holds the name of the previous working directory:
cd /tmp
echo You are here: $PWD
echo You were here: $OLDPWD
cd $OLDPWD

vlc -Idummy -Vcaca "Star Wars: Episode IV - A New Hope (1977).mkv"

Play as it was originally intended by @GeorgeLucasILM back in the 70s

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