KILL ALL BACKGROUND PROCESSES
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This plugin provides a quick and easy way to kill all 
process running in the background.

Simply use:
esh> killbg

And all background processes will be terminated.

Setup
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This plugin uses the get_jobs hook in the esh_shell shell object.
It must be defined and return a list of the current jobs.

Testing
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Run: esh> ./stdriver.py -v -p [location of .so] [location of plugins.tst]