I am trying to retrieve the environment variables from a CGI script after it has been submitted, however, the only environment variables I am able to retrieve are REMOTE_HOST, REMOTE_ADDR, and REQUEST_METHOD. To obtain these I use: 
$ip_addr = $ENV{'REMOTE_ADDR'};
$host_name = gethostbyaddr(inet_aton($ip_addr), AF_INET);
$req_method = $ENV{'REQUEST_METHOD'};

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The other variabels I wish to obtain, but do not show up are as follows: 
$host_port = $ENV{'REMOTE_PORT'};
$user_agent = $ENV{'HTTP_USER_AGENT'};
$mac_address = `/sbin/arp -a $ip_addr` =~ /at\s+(\S+)\s+/;
$user_referer = $ENV{'HTTP_REFERER'};

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I know I can get all of the variables by doing the following: 
#!/usr/bin/perl
print "Content-type: text/html\n\n";
$n = 0;
print "<tt>\n";
foreach $key(sort keys(%ENV)) {
   print "$key = $ENV{$key}<p>";
   @keys[$n] = $ENV{$key};
   $n++;
}
print qq~The remort port is $keys[15]~;

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But that seems a little longwinded and unnecessary. If anyone could suggest something shorter or possibly point out what I'm doing wrong that would be great. Thank again!

In reply to HTTP/CGI Environmnet Variables by intranetman

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