exec and dead children

[Karl Auer]

I have a bash script which starts firefox:

   #!/bin/sh
   nohup /usr/bin/firefox \
         -new-window URL1 \
         -new-window UR2  \
         [etc] > /dev/null 2>&1 &
   /bin/sleep 20

I start this script from a terminal. To avoid having an unused terminal
window hanging around afterwards, and also to avoid having to press
CTL-D, type "exit" or click the close widget, I start this script using
exec:

   exec myscript.sh

If I don't put that delay at the end of the script, the new firefox
windows die with the script. Actually, they never really get time to
open. If I don't use nohup, they die regardless of the delay.

Why is this so? Is there some way I can avoid having to insert that
delay?

Regards, K.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer
http://twitter.com/kauer389

GPG fingerprint: 3C41 82BE A9E7 99A1 B931 5AE7 7638 0147 2C3C 2AC4
Old fingerprint: EC67 61E2 C2F6 EB55 884B E129 072B 0AF0 72AA 9882