Getting started on Ubuntu Mate as a long time MacOS user
Work in progress. This index post will be expanded with subposts as they are finished by me.
Actually the keyboard shortcut for Mac is Shift+CMD+4. But I set it to SHIFT+CTRL+page-up. Pick one you like.
Disk IO speed monitoring
apt install iotop
Screen Recording like with Quicktime
sudo add-apt-repository ppa:maarten-baert/simplescreenrecorder
sudo apt-get update
sudo apt-get install simplescreenrecorder