newbie CGI question

Todd Rockhold todd.rockhold at
Tue Feb 13 14:27:50 CST 2001

I have a standalone perl script which runs fine but fails as a cgi script
(error 500: internal server error).

The culprit appears to be the following line:

	    $result = qx(echo '$smiles' |

Attempt to trap the error with an eval{} block had no detectable effect.

How do I do the equivalent in a CGI script?  
What rule am I breaking?   
What tutorials/documentation addresses running another program from within a
CGI script?

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