Notices by Yes, I Know IT ! 🎓 (yesiknowit@mastodon.social), page 2

Many Linux distributions are slowly phasing out "ifcong" in favor of the "ip" command. If you have a hard time making the transition, or simply if you are curious, worth reading that article by Pradeep Kumar:

https://www.linuxtechi.com/ip-command-examples-for-linux-users/

A tribute to the best Doodle *ever*.

My 5-year-old boy had lots of fun guiding the rabbit to eat all the carrots. He struggles a little bit with loops though. But after 20 minutes of trial and errors, he did it!

<<proud dad :D>>
https://g.co/doodle/he69ng?ds=cl

Nice illustration of several random shuffle algorithms, including Fisher–Yates Shuffle:
https://bost.ocks.org/mike/shuffle/
by Mike Bostock (https://twitter.com/mbostock)

#Random #Shuffle #JavaScript #Array

PDF to PNG using ImageMagick
```
convert -background white \
-define pdf:fit-page=A4 \
sourcepath.pdf \
-flatten \
destpath.png
```
#ImageMagick #IM #PDF #PNG #Convert

Despite increasing SSD popularity, hard drives are not yet an extinct specy. But how do they work?

Here is a nice infographic to explain platters, arms, sectors, and much more:
https://www.makeuseof.com/tag/understand-makes-hard-drive-tick/

#HardDrive #HD

Check your Bash skills and challenge your friends:
https://www.yesik.it/BASH-IT-OUT

#Bash #Shell #Challenge #Puzzle #Linux
#YesIKnowIT @itsfoss2

How to catenate files scattered through several sub-directories?
https://yesik.it/blog/2018-catenate-files-from-subdirectories

#Linux #Grep #Find #Globstar #Catenate #TextFiles

Of bits and bytes
https://yesik.it/blog/2018-bit-nibble-byte-and-word

#Bit #Nibble #Byte #Octet #Word #BinaryArithmetic #BooleanAlgebra #ComputerScience #ComputerHistory

About the Execute Bit
https://yesik.it/blog/2018-the-x-permission-bit

#Linux #Permissions #Chmod

`curl` is the swiss army knife for querying remote services using the #FTP, #FTPS, #HTTP, #HTTPS, #IMAP, #LDAP, #POP3, #SMTP or #TFTP protocol (and many more!)

Here is a tutorial by Himanshu Arora showing 5 basic #curl examples:
https://www.howtoforge.com/linux-curl-command/

#linux #unix #cli

`chmod +x` will make a file executable. If you ever have written a shell script on Unix/Linux, you know that. But what does that `x` means for a directory?

https://yesik.it/blog/2018-the-x-permission-bit
#Linux #Unix #chmod

10 Ways of Launching Commands from your Shell
using:
; & && | and ||

https://www.yesik.it/SHELL10
#Shell #Command #Background #Multitask

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

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

#VLC #AsciiArt #Linux #CommandLine

Stop now the vi .vs. emacs war.

Ed is THE standard editor. And it is since unmemorable times.

https://www.gnu.org/fun/jokes/ed-msg.html
#Ed #Standard #Unix #TextEditor

What happens if you change a shell script, whilst it is running?
https://www.shellscript.sh/tips/change-running-script/

by Steve Parker (https://twitter.com/unixsteve)
#Shell #SelfModifying #Script

If you like writing your JavaScript code in a functional style, you may already know the `Array.map` and `Array.filter` methods.
But is there a way to combine them? And will this be a more efficient solution?
http://www.yesik.it/blog/2018-javascript-map-filter-and-reduce-compared

#JavaScript #FunctionalStyle #Array #Filter #Map #Reduce

The Executable and Linkable Format (ELF), is a standard file format for executable files used on many Unix-like x86 operating systems.

Part.1 https://blog.k3170makan.com/2018/09/introduction-to-elf-format-elf-header.html by Keith Makan (https://twitter.com/k3170Makan)
#elf #linux

Understanding symbolic and hard links:

https://linuxtechlab.com/working-with-linux-file-links/
#Linux #Unix #File #Link

You basically have three strategies to tune the Linux Kernel vm.dirty* settings:
1. Decrease the cache (low dirty_ratio)
2. Increase the cache (high dirty_background_ratio)
3. Increase the spread (dirty_background_ratio and high dirty_ratio)

https://lonesysadmin.net/2013/12/22/better-linux-disk-caching-performance-vm-dirty_ratio/
#Linux #Kernel #Tuning #Disk

An instructive article if you need to fine-tune your system or if you want to know more about the process management capabilities of Linux.

https://likegeeks.com/linux-process-management/
#Linux #Process #Management