As Nathan pointed out, this is not a good solution. Why not use a FlipBook <http://docs.thefoundry.co.uk/nuke/63/pythondevguide/flipbook.html>?
A flipbook can even be extended to support multiple platforms <https://gist.github.com/krets/f821fc47dcaf6c7820ee>. Anyhow, I will still answer your question as an academic exercise. subprocess.Popen will not instantiate bash. The docs <https://docs.python.org/2/library/subprocess.html#popen-constructor> say that it will use /bin/sh by default. There is an executable argument that will allow you to override the shell it will use. However, aliases *will not* work in a non-interactive shell and furthermore the .bash_profile (and other startup scripts) are *not* executed by bash for non-interactive shells. So to work around it, you may need to play game. In your .bash_profile add: shopt -s expand_aliases Then you need to change your Popen to work more like this: def rvFinalCheck(nodelist): cmd = ['bash', '--login', '-c', 'rv'] for node in nodelist: cmd.append(node['file'].value()) cmd.append('-over') ocmd = ' '.join(cmd) subprocess.Popen(ocmd, shell=True) Cheers, jesse
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