Yes, I Know IT ! 🎓 @YesIKnowIT@mastodon.social

From `man 4 intel` on my Debian box.

Who catches the reference?
Reply with your favorite picture of Z.B ;)

#42 #Xorg #Linux #Fun #H2G2

Save time with Awk...

...and give your spreadsheet some vacations after having read that great article by the Free Software Magazine.

http://freesoftwaremagazine.com/articles/save_time_awk_print/

Strengthen your #flexbox #css skills with that nice little frog:
http://flexboxfroggy.com/

#flexboxfroggy

This is what a pool of entropy looks like in the real world.
...
Wait a minute, a "wall" of entropy...

https://youtu.be/1cUUfMeOijg

#Entropy #Pool #Random #Generator

"How do you know whether a quantum computer has done anything quantum at all?"
Urmila Mahadev knows the answer

https://www.quantamagazine.org/graduate-student-solves-quantum-verification-problem-20181008/
#Quantum #Computing #Achievement

A wonderfully clear and accurate article to understand Cryptography and Public Key Infrastructure, by Alex Wood

https://opensource.com/article/18/5/cryptography-pki
#Crypto #Cryptography #PKI

Display the first 5 lines of a file:
sed '5q' file

#Shell #Sed #Linux

#Vim is great.
I like #tmux more and more.

How could it be to use them both at the same time?
https://blog.bugsnag.com/tmux-and-vim/
by @keeganlow

My #Bash book available both as #PaperBook and #eBook

https://yesik.it/BASH-IT-OUT/PAPER …
https://yesik.it/BASH-IT-OUT/PDF
https://yesik.it/BASH-IT-OUT
@itsfoss2 #YesIKnowIT

A great article by Carla Schroder to understand the controversial but omnipresent systemd.

https://www.linux.com/learn/understanding-and-using-systemd
#Linux #Systemd

A #Mastodon instance for #Linux Lovers
https://linuxrocks.online/about

Try that new #SocialNetwork and follow me there https://yesik.it/mastodon
#YesIKnowIT

`join` is a standard #POSIX tool to merge two text files based on their content.

https://yesik.it/EP14

#Join #Linux #Unix #TextFile #Database
#YesIKnowIT @itsfoss2

split and csplit -- old friends, I used a lot in the 1.44MB floppy disk era...

https://www.linux.com/learn/intro-to-linux/2017/8/splitting-and-re-assembling-files-linux
by @CarlaSchroder

#Linux #Unix #Split #csplit

Right-align text on 80 columns:
sed -E ':a /.{80}/!{s/^/ /;ba}' file

#Shell #Sed #Linux

In AWK an action without associated pattern defaults to 1.
So those two commands are the same:

seq 10 | awk '{print}'
seq 10 | awk '1 {print}'

#Shell #AWK

How could I have lived without knowing that?

```
# copy file to the #X11 #Clipboard:
xclip -sel c < file
```
#Linux #Shell #Terminal #CLI

In Bash the pseudo-variable RANDOM returns a pseudo-random integer in the [0;32767] range

echo $RANDOM

#Bash #Random

GNU sed has a nice 'e' modifier for substitutions:
sed 's/.*/date +%F -d &/e' << EOT
now
tomorrow
yesterday
EOT

#GNU #sed #Linux

`ls -lt` will show files ordered by modification date — most recent first.

#ls #shell #linux

Take a little bit of computer history and a little bit of computer science, mix them together and you have that article introding the fundamental unit of measurement used in computing or electronic engineering.

https://www.yesik.it/blog/2018-bit-nibble-byte-and-word