Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things

Re: System commands using CGI

by ColonelPanic (Friar)
on Dec 03, 2012 at 09:07 UTC ( #1006824=note: print w/replies, xml ) Need Help??

in reply to System commands using CGI

Obligatory standard response:

use strict; use warnings;

This will encourage you to write better code, in particular declaring all of your variables as lexical.

use CGI;

It is much better to use the CGI module to handle your output, rather than rolling your own. For a discussion of this, see one of the great ancient works of the monastery.

use CGI::Carp qw/fatalsToBrowser/;

This enables you to see your script's fatal errors in the browser. Essential for debugging.

Finally, checking the error given by system would probably be helpful:

my $err = system("who",">>/var/www/cgi-bin/new.txt"); unless ($err == 0) { die "who command failed: $?"; }

See the documentation for system for more information on checking the error codes.

When's the last time you used duct tape on a duct? --Larry Wall

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1006824]
[LanX]: ... test
[LanX]: ...
[sierpinski]: test passed?
[sierpinski]: It's really weird seeing that I have 20 votes now.. I've been at 18 for so long

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (11)
As of 2017-03-28 12:53 GMT
Find Nodes?
    Voting Booth?
    Should Pluto Get Its Planethood Back?

    Results (331 votes). Check out past polls.