How do I limit the running time of a BASH script

Question

I have a long running BASH script that I am running under CYGWIN on Windows.

I would like to limit the script to run for 30 seconds, and automatically terminate if i

Answer 1

You could run the command as a background job (i.e. with "&"), use the bash variable for "pid of last command run," sleep for the requisite amount of time, then run kill with that pid.