Sys::Hostname::Long - Try every conceivable way to get full hostname
$host_long = hostname_long;
How to get the host full name in perl on multiple operating systems (mac, windows, unix* etc)
This is the SECOND release of this code. It has an improved set of tests and improved interfaces - but it is still often failing to get a full host name. This of course is the reason I wrote the module, it is difficult to get full host names accurately on each system. On some systems (eg: Linux) it is dependent on the order of the entries in /etc/hosts.
To make it easier to test I have testall.pl to generate an output list of all methods. Thus even if the logic is incorrect, it may be possible to get the full name.
Attempt via many methods to get the systems full name. The Sys::Hostname class is the best and standard way to get the system hostname. However it is missing the long hostname.
Special thanks to David Sundstrom and Greg Bacon for the original Sys::Hostname
This is the original list of platforms tested.
MacOS Macintosh Classic OK
Win32 MS Windows (95,98,nt,2000...)
MacOS X Macintosh 10 OK
(other darwin) Probably OK (not tested)
Linux Linux UNIX OS OK
HPUX H.P. Unix 10? Not Tested
Solaris SUN Solaris 7? OK (now)
Irix SGI Irix 5? Not Tested
FreeBSD FreeBSD OK
A new list has now been compiled of all the operating systems so that I can individually keep information on their success.
THIS IS IN NEED OF AN UPDATE AFTER NEXT RELEASE.
Most unix systems have trouble working out the fully qualified domain name as it to be configured somewhere in the system correctly. For example in most linux systems (debian, ?) the fully qualified name should be the first entry next to the ip number in /etc/hosts
192.168.0.1 fred.somwhere.special fred
If it is the other way around, it will fail.
* Extra code from G
* Dispatch table
* List of all operating systems.
Solaris * Fall back 2 - TCP with DNS works ok * Also can read /etc/defaultdomain file
Originally by Scott Penrose <firstname.lastname@example.org>
Contributions: Michiel Beijen <email@example.com>
Copyright (c) 2001,2004,2005,2015 Scott Penrose. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
To install Sys::Hostname::Long, copy and paste the appropriate command in to your terminal.
perl -MCPAN -e shell
For more information on module installation, please visit the detailed CPAN module installation guide.