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I am almost brand new to python scripting, so please excuse any stupid questions, but any help anyone can give would be much appreciated. I am trying to write a python script for other people to use, and in it I need to call a program that I won't always know the path to. To get around that, I ask the user to provide the path to the program, which will work, but I don't want users to have to provide the path EVERY time they run the script so I have been trying to set up a bash alias by having the script add to the ~/.profile and ~/.bashrc files. I can then use the alias to run the program from an interactive bash shell, but when the script tries to run it, I get a "command not found" error... I have tried re-sourcing the .bashrc file and using the "shopt -s expand_aliases" command with no luck. My ~/.bashrc looks like this: alias nuke='/Applications/Nuke6.2v4/Nuke6.2v4.app/Contents/MacOS/Nuke6.2v4' And the piece of the script looks like this: os.system('source .bashrc') os.system('shopt -s expand_aliases') os.system('nuke -x scriptPath') But once the script gets up to this point, it returns: sh: nuke: command not found Am I doing something wrong or is there another way I can permanently store the path to a program?

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