Linux version installation problem

[[r4]]

Thank you, jart, you're the best. However, your solution doesn't work. Maybe I don't understand something here, so I'll try to explain:

Code:

#!/bin/bash //does nothing at all, it's just a "magic byte"
sleep 120 //yep, that's my value, delays execution for given amount of seconds
exec bfilter-gui //actually runs BFilter (given it's executable is in the current directory

The problem is: whatever period I order the script to sleep for, it doesn't work. What is more, for the reason still unindentified, sometimes BFilter starts twice (sic!), with one copy obviously defunct. (However I guess it's about the way I call bfilter-gui binary, whether it's simple "./bfilter-gui" or "~/.local/bin/bfilter-gui").

To clarify some more, I'd mention that GNOME runs BFilter through "Sessions" menu.

Any ideas?