Tue Feb 20 14:39:55 CET 2018

Machine: iftlab0224723

awk - text tool
echo
- echo "blabla $HOME" - display: blabla + echo $HOME
- echo 'blabla $HOME' - display(as string): blabla $HOME
- text between ` ` is executed as a command
- echo "Today,`date`, I am" - Display: Today, "date-command", i am

last | awk '{print $1;}' |sort | uniq | wc -l: Prints amount of last users on the machine.

root : open root with splash-window
root -l : open root without splash-window

IN ROOT:
.q : quit root
.help : help