Many of the errors that can occur with CGI programs produce a page displayed in the browser as shown in Figure 7.6. Pretty helpful, huh?
Figure 7.6. Server error
There could be many causes of this condition. The following are some common things to check.
You can also run the program from the command line:
$ ./error.cgi syntax error at ./error.cgi line 6, near ") chomp" Execution of ./error.cgi aborted due to compilation errors.
A clue! The script has a syntax error near line 6.
When all else fails, check the error log file /var/log/httpd/error_log . You might see a line that looks like this:
syntax error at /var/www/cgi-bin/error.cgi line 6, near ") chomp" Execution of /var/www/cgi-bin/error.cgi aborted due to compilation errors. [Fri Mar 25 10:23:17 2002] [error] [client 127.0.0.1] Premature end of script headers: /var/www/cgi-bin/error.cgi
Aha! Another clue pointing to line 6!