Specifying a file path in IDL

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http://www.linuxquestions.org – Hello, I've been dabbling in IDL lately, and it seems useful enough, but occasionally I come across a problem like this: I'm trying to call an IDL procedure from within an IDL script which is called from a .csh script. (Don't ask, trust me, you don't want to know.) The IDL procedure may or may not be in the same directory as the .csh, so I'm calling it by it's full path: /home/ic/rad_sim However, all IDL will do is give me a syntax error and tell me ic is an undefined variable. Putting ic in double quotes makes the undefined variable error go (HowTos)