in reply to Converting Unix to NT

Three quick tips -- warnings, strict, and diagnostics. Perl has the ability to diagnose some dodgy programming practices. It's pretty good at helping you discover what's wrong. Your script should start out something like this: 
#!/usr/bin/perl -w
use strict;
use diagnostics;

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On NT, you may have to call it with the command perl -w scriptname so the warning goes into effect.

You'll probably end up with pages full of things to check. Log them to a file and do what they recommend.

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RE: Re: Converting Unix to NT
by Anonymous Monk on Aug 24, 2000 at 04:16 UTC
    Thanks. Cool. So here's what I got: CGI Error The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are: Global symbol "$q" requires explicit package name at e:\inetpub\awesomelibrary.net\cgi-bin\awesome.pl line 132. Global symbol "$sess_id" requires explicit package name at e:\inetpub\awesomelibrary.net\cgi-bin\awesome.pl line 134. Global symbol "$usr_name" requires explicit package name at e:\inetpub\awesomelibrary.net\cgi-bin\awesome.pl line 136. Global symbol "$password" requires explicit package name at e:\inetpub\awesomelibrary.net\cgi-bin\awesome.pl line 137. Global symbol "$PATH" requires explicit package name at e:\inetpub\awesomelibrary.net\cgi-bin\awesome.pl line 140. Global symbol "$MAIN_PANEL" requires explicit package name at e:\inetpub\awesomelibrary.net\cgi-bin\awesome.pl line 150. Global symbol "$TEMPLATE" requires explicit package name at e:\inetpub\awesomelibrary.net\cgi-bin\awesome
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      Aha. What you need to do is tell Perl that you want to use these variables. Generally, that's done something like this: 
      #!/usr/bin/perl -wT     # or #!c:/perl/bin/perl -wT

use strict;
my $q;
my $sess_id;
my $usr_name;
my $password;

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      and so forth. If you're familiar with scoping rules in another language, you'll find that Perl is pretty similar.
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[d/l]
        If there is any chance that you will want to run this using mod_perl, it is important to change those declarations to: 
        use vars qw (
  $q $sess_id $usr_name $password
);

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        I tried to explain why at RE (3): BrainPain-Help, don't think I succeeded. If someone wants to give me feedback on how to improve that description, I would appreciate it....

        EDIT
        Note that the mod_perl issue is likely to be an issue with other "fast CGI" type approaches like FastCGI and ASP. The underlying problem is not Apache/mod_perl, it is with how Perl names things.

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[d/l]
RE: Re: Converting Unix to NT
by Anonymous Monk on Aug 24, 2000 at 05:21 UTC
    COOL! I'm actually making progress. Disregard last message... got through that one and working through some more warnings and the page half-loads now.
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