Environment Variables

Legg83 has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: Environment Variables by synapse0 (Pilgrim) on Aug 18, 2001 at 00:09 UTC
You can do a `print "Content-Type: text/html\n\n"; foreach (keys %ENV) { print "$ENV{$_} <BR>\n"; }` [download] and see what's available to you. -Syn0 update: obviously that was really silly of me to leave off the key in the printed value.. sheesh.. workin in windows makes me stupid. Thanks for correcting that maverick.	[reply] [d/l]
Re: Re: Environment Variables by maverick (Curate) on Aug 18, 2001 at 00:32 UTC
Would also be helpful to see what key has what value :) `print "Content-Type: text/html\n\n"; foreach (keys %ENV) { print "$_ => $ENV{$_} <BR>\n"; }` [download] 'course Data::Dumper is your friend.... `use Data::Dumper; print "Content-Type: text/plain\n\n"; print Dumper \%ENV;` [download] /\/\averick perl -l -e "eval pack('h*','072796e6470272f2c5f2c5166756279636b672');"	[reply] [d/l] [select]
Data::Dumper by Kevman (Pilgrim) on Aug 18, 2001 at 12:54 UTC
Of course you should remember to remove Data::Dumper afterwards... I'm told it is quite heavy on the processing Although I confess I've never used it :) Kevman Sorry, Apparently its not heavy on processing, just worth removing because of its actual size!!! (1000 lines)	[reply]
Re (tilly) 1: Environment Variables by tilly (Archbishop) on Aug 18, 2001 at 20:54 UTC
In addition to the above scripts, try this one: `#! /usr/bin/perl use Data::Dumper; $Data::Dumper::Indent = 1; print "Content-Type: text/plain\n\n"; print Data::Dumper->Dump([\%ENV], ['*ENV']);` [download] It isn't much of an improvement this time (though it will help in the unusual occurance that any environment variables have data in them special to HTML), but it is handy to know about the options that Data::Dumper has for more complex data structures...	[reply] [d/l]
Re: Environment Variables by aquacade (Scribe) on Aug 18, 2001 at 09:25 UTC
Use remote_addr() function to return the dotted IP address of the remote host. Go see the CGI author's website at HTTP Session Variables Be sure to scroll to the top for the full table of contents! I'm not sure how to capture DNS info. If you want to look someone up, just use a WHOIS portal like www.networksolutions.com, find the domain's registrar site, and go look them up there. ..:::::: aquacade ::::::..	[reply]