in reply to
How to install CGI in ubuntu machine?
Apache has the error_log file which has specific details of failures. See Ovid's CGI Course from Tutorials->Web Programming, along with the Apache documentation.
I make decisions, and my brain carries them out
My brain makes the decisions, and I observe them (if I'm lucky)
I make some decisions, and my brain makes others
My spouse makes decisions and I and my brain carry them out
I wrote a program to relieve me and my brain from the burden of decision-making
The black-helicopter people project the decisions into my brain and then I do as ordered
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