system command in CGI

[idorjee]

Hi, can anyone plz help me. I'm trying to run the 'pepwindow' program on the input from my html form, and my script doesn't work. The following '-goutfile' option in the system command is for the output filename and '-gdirectory' for the directory.

Thanks alot.

#!/usr/bin/perl -w
use CGI;
use CGI::Carp qw(fatalsToBrowser);
 
my $fasta=$cgi->param('SEQUENCE');
system("/usr/local/bin/pepwindow $fasta -graph png -goutfile output -gdirectory temp/");
.......
 

[miller]

I avoid all system commands in CGI scripts.

Instead use Proc::Reliable.

- Miller

[KevinADC]

I have never used that module but I get edgy when a module is several years old, has no recent updates and is the only module contributed by the author. Does it seem to work OK for you?

[idorjee]

thanks Miller, i will try and see if the module does the trick.

I avoid all system commands in CGI scripts.

Instead use Proc::Reliable.

- Miller

[miller]

I have never used that module but I get edgy when a module is several years old, has no recent updates and is the only module contributed by the author. Does it seem to work OK for you?

Kevin,

I maintain some code that uses this module to encapsulate pdf generation, but I've never written any myself. However, it's always worked well that I can see, and I've assumed that it was used because of the relatively unstable nature of the secondary program.

I'm not sure I would use it if I had to create any new code for the very reasons that you stated. However, that's mostly because I avoid any system calls at all in all of my code.

- Miller