I needed a way to debug my
thunar (file manager) custom actions, as it doesn't have a way of debugging these scripts itself.
I make my thunar Custom actions run a script that contains the following snippet at the top:
#!/bin/bash logfile=~/tmp/bash-$$.log exec > $logfile 2>&1 set -x
Where all debug output of
set -x will go into
$logfile. Great for making sure the supplied command arguments are sent from thunar as expected, which is why most of my custom actions didn't work before.