I am new to shell scripting. I don't understand what the $DISPLAY
environmental variable is.
I have Ubuntu 13.10 and I use /bin/bash
shell. I have two monitors.
Questions:
Command
echo $DISPLAY
will print:0.0
on my machine (on both monitors). What does this mean?In which cases will the
$DISPLAY
variable be blank or NULL?Are there any articles or tutorials on this?