Show notification window
zenity --error --text="Hellow" --title="Patata" --timeout=2
Rebuild font cache
$ fc-cache -f -v
Update alternative
Set another path to bin for program
sudo update-alternatives --config java
Insert unicode char
Press
Shift+Control+u
then the unicode character's code.
e.g.
Shift+Control+u
then
01b8
to get
Ƹ