Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much

Debugging a CGI

by toma (Vicar)
on Sep 03, 2001 at 07:40 UTC ( #109814=snippet: print w/ replies, xml ) Need Help??
Description: CGI programs can be debugged by using the ptkdb debugger in the X-windows environment. Execute xhost + on the machine where the debugger is to be displayed. This allows the web server to open the window on the machine where the ptkdb window is to be displayed.

This technique is complimentary to the more common techniques of sending the error messages to the browser, examining the error logs, and diagnostic print statements.

#!/usr/bin/perl -d:ptkdb
  # Set the DISPLAY variable to the name of the local machine
  # where the debugger window and web browser appear.
  $ENV{DISPLAY} = "mymachine:0" ;
print "Content-type: text/html\n\n";
print "<PRE>";
for (my $i=0; $i<10; $i++)
  print "Count $i\n";
print "</PRE>\n";
Comment on Debugging a CGI
Download Code

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: snippet [id://109814]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others having an uproarious good time at the Monastery: (4)
As of 2016-05-27 23:45 GMT
Find Nodes?
    Voting Booth?