Fix slow Manjaro download for update: sudo pacman-mirrors -g
Probably a slow mirror. More information in Wiki
Set system date (pi) sudo date -s 'YYYY-MM-DD HH:MM:SS'
Good if you get an error running a make file. When the pi isn't connected to the internet.sudo usermod -a -G <group> <your username>
If you have permission issues with accessing files or services. Leave out the broken brackets! Remember to reboot after this command.lspci
Lists all your installed hardware and controllers. Can use this to see if your nVidia GPU is K1100 or K2100, for example.