FAQ 9.23 How do I find out my hostname, domainname, or IP address?
in [Perl]
|
Prev: Using new features of Perl
Next: FAQ 6.2 I'm having trouble matching over more than one line. What's wrong?
From: PerlFAQ Server on 13 Apr 2010 18:00 This is an excerpt from the latest version perlfaq9.pod, which comes with the standard Perl distribution. These postings aim to reduce the number of repeated questions as well as allow the community to review and update the answers. The latest version of the complete perlfaq is at http://faq.perl.org . -------------------------------------------------------------------- 9.23: How do I find out my hostname, domainname, or IP address? (contributed by brian d foy) The "Net::Domain" module, which is part of the standard distribution starting in perl5.7.3, can get you the fully qualified domain name (FQDN), the host name, or the domain name. use Net::Domain qw(hostname hostfqdn hostdomain); my $host = hostfqdn(); The "Sys::Hostname" module, included in the standard distribution since perl5.6, can also get the hostname. use Sys::Hostname; $host = hostname(); To get the IP address, you can use the "gethostbyname" built-in function to turn the name into a number. To turn that number into the dotted octet form (a.b.c.d) that most people expect, use the "inet_ntoa" function from the "Socket" module, which also comes with perl. use Socket; my $address = inet_ntoa( scalar gethostbyname( $host || 'localhost' ) ); -------------------------------------------------------------------- The perlfaq-workers, a group of volunteers, maintain the perlfaq. They are not necessarily experts in every domain where Perl might show up, so please include as much information as possible and relevant in any corrections. The perlfaq-workers also don't have access to every operating system or platform, so please include relevant details for corrections to examples that do not work on particular platforms. Working code is greatly appreciated. If you'd like to help maintain the perlfaq, see the details in perlfaq.pod. |