# working for most of the terminal in Linux

# 0 - check you terminal name
# 1 - is there a --full-screen like option 
$  --help
# 2 - open /usr/share/applications/.desktop
$ sudo nvim /usr/share/applications/mate-terminal.desktop
# 3 - at the Exec line add the full scree option
Exec=mate-terminal --full-screen