Notices by Yes, I Know IT ! 🎓 (yesiknowit@mastodon.social), page 15

My new favorite tool to draw quick and NOT dirty UML sequence diagrams:
https://bramp.github.io/js-sequence-diagrams/

#UML #JavaScript #SVG

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

#bash #linux

How to Install Software from Source Code… and Remove it Afterwards

https://itsfoss.com/install-software-from-source-code/
#Linux #Beginner #C #Git #Make #Compiling #NodeJS
#YesIKnowIT @itsfoss2

`‥ | read ‥` is not portable between #zsh and #bash

Compare in both shells :
echo 1 | read X; echo $X

A quick reminder to myself:

• x86 ≡ Original 16 bits architecture [8086⎇]
• x86-32, IA-32 ≡ Intel 32 bits extension to x86 [80386⎇]
• x86-64, AMD 64, Intel 64 ≡ 64 bit extension to x86 [AMD Opteron⎇]
• IA-64 ≡ Intel Itanium architecture

#x86 #Itanium #AMD #Intel

XML command line processing:
http://xmlstar.sourceforge.net/

(never ever use #sed for that!)
#XML #XSLT1 #CLI

For the #shell #beginners :
« #GlobPatterns : how to move hundreds of files in not time [1/3] »
https://youtu.be/TvW8DiEmTcQ

#Unix #Linux
#YesIKnowIT

Three completly different AWK programs:

seq 10 | awk '1 { print }'
seq 10 | awk '/1/ { print }'
seq 10 | awk 'NR==1 { print }'

#Shell #AWK #regex

Different does not mean better or worst. It just means different.

https://www.linux.com/learn/intro-to-linux/2017/6/what-nosql
by @CarlaSchroder

#SQL #NoSQL

#VM #Containers #Emulation #Wine?
Which virtualization technology is the best for YOUR needs?

https://yesik.it/VIRT101

#CheatSheet
#YesIKnowIT

What is #Virtualization?
And how does that relate to #Emulation, #Containers and #CloudComputing?

https://www.yesik.it/EP12
#YesIKnowIT

How to move hundreds of files in no time?
Using the find command!

https://youtu.be/zmEFXjyzaQk
#Unix #Linux #Move #Files #Find
#YesIKnowIT

A text that must be studied at school in the #ModernHistory, #Engineering and #Philosophy classrooms.

@stephenfry on The Internet
https://youtu.be/A7JjxaKDgGo

Type the same command in all you `tmux` panes:
tmux setw synchronize-panes

#tmux #Terminal #Shell #CLI

If your shell supports history, use "!-2" to repeat the before last command
#Unix #Linux #Shell #Bash #History

Do you know I have a "Bash and Linux Command Line" course On #Udemy?
Take a look here for a discount:
https://yesik.it/BSH101

If your shell supports history, use "!-1" to repeat the last command.
"!!" is a shorthand for that too
#Unix #Linux #Shell

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

#Kernel #Linux
#YesIKnowIT

Fine tune Linux Kernel I/O by setting up dirty page parameters.

https://lonesysadmin.net/2013/12/22/better-linux-disk-caching-performance-vm-dirty_ratio/

#Linux #Kernel #Cache #Disk #Tuning

#OpenStack is a complex and somewhat frightening beast
https://opensource.com/resources/what-is-openstack