Linux

apt man page (link)
apt-get man page (link)
Cheat Sheet (link)
Standard Aliases (link)
ubuntuusers - adduser (link)
ubuntuusers - Paketverwaltung (link)
ubuntuusers - apt (link)
ubuntuusers - git (link)
ubuntuusers - ImageMagick (link)
ubuntuusers - mtp (link)
ubuntuusers - pdftk (link)
Ubuntu Manpage Repository (link)
Bash Reference Manual (link)
bash tutorial (link)
bash for loops (link)
Examples of small bash Scripts (link)
Advanced Bash-Scripting Guide (link)
Boot Repair (link)
Super Grub2 (link)
curl (link)
access Ubuntu from Windows remotely (link)
How to install Ubuntu 20.04 and dual boot alongside Windows 10 (link)