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Once more, in Perl
Authored by: ngb on Jan 07, '02 01:22:46PM
Here's a perl version I wrote. I use curl to get the IP address from dyndns and save it to a file so I can keep track of when and how often the number changes. I also use a file for the HTML code so it's not hard-coded into the script.

$rootfilesys = "/Volumes/{Your iDisk}/Sites/";
$ipsource = $rootfilesys."myip.html";
$htmlsource = $rootfilesys."myredirect.html";
$htmldest = $rootfilesys."ipindex.html";

// check that the iDisk is mounted
if (-e $rootfilesys) {
#    print "iDisk is mountedn";
} else {
    die "iDisk not mounted: $!n";

`curl -s -i -o /Volumes/ngb/Sites/myip.html`;

// extract the IP number from the resulting file
open (IP_SOURCE, $ipsource);
while () {
    ($ipnum) = /(d+.d+.d+.d+$)/;
      if (defined($ipnum)) {
close (IP_SOURCE);

open (HTML_SOURCE, $htmlsource);
open (HTML_DEST, ">".$htmldest);
while () {
    print HTML_DEST $_;
close (HTML_DEST);
close (HTML_SOURCE);
I've removed a bunch of error checking code for readability. Mostly checking that the files are opened and closed correctly.

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