NAME
Sys::Hostname::Long - Try every conceivable way to get full hostname
SYNOPSIS
use Sys::Hostname::Long;
$host_long = hostname_long;DESCRIPTION
How to get the host full name in perl on multiple operating systems (mac, windows, unix* etc)
DISCUSSION
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
SUPPORT
This is the original list of platforms tested.
MacOS Macintosh Classic OK
Win32 MS Windows (95,98,nt,2000...)
98 OK
MacOS X Macintosh 10 OK
(other darwin) Probably OK (not tested)
Linux Linux UNIX OS OK
Sparc OK
HPUX H.P. Unix 10? Not Tested
Solaris SUN Solaris 7? OK (now)
Irix SGI Irix 5? Not Tested
FreeBSD FreeBSD OKA 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.
- Acorn - Not yet tested
- AIX - Not yet tested
- Amiga - Not yet tested
- Atari - Not yet tested
- AtheOS - Not yet tested
- BeOS - Not yet tested
- BSD - Not yet tested
- BSD/OS - Not yet tested
- Compaq - Not yet tested
- Cygwin - Not yet tested
- Concurrent - Not yet tested
- DG/UX - Not yet tested
- Digital - Not yet tested
- DEC OSF/1 - Not yet tested
- Digital UNIX - Not yet tested
- DYNIX/ptx - Not yet tested
- EPOC - Not yet tested
- FreeBSD - Not yet tested
- Fujitsu-Siemens - Not yet tested
- Guardian - Not yet tested
- HP - Not yet tested
- HP-UX - Not yet tested
- IBM - Not yet tested
- IRIX - Not yet tested - 3rd hand information might be ok.
- Japanese - Not yet tested
- JPerl - Not yet tested
- Linux
- LynxOS - Not yet tested
- Mac OS - Not yet tested
- Mac OS X - OK 20040315 (v1.1)
- MachTen - Not yet tested
- Minix - Not yet tested
- MinGW - Not yet tested
- MiNT - Not yet tested
- MPE/iX - Not yet tested
- MS-DOS - Not yet tested
- MVS - Not yet tested
- NetBSD - Not yet tested
- NetWare - Not yet tested
- NEWS-OS - Not yet tested
- NextStep - Not yet tested
- Novell - Not yet tested
- NonStop - Not yet tested
- NonStop-UX - Not yet tested
- OpenBSD - Not yet tested
- ODT - Not yet tested
- OpenVMS - Not yet tested
- Open UNIX - Not yet tested
- OS/2 - Not yet tested
- OS/390 - Not yet tested
- OS/400 - Not yet tested
- OSF/1 - Not yet tested
- OSR - Not yet tested
- Plan 9 - Not yet tested
- Pocket PC - Not yet tested
- PowerMAX - Not yet tested
- Psion - Not yet tested
- QNX
- Reliant UNIX - Not yet tested
- RISCOS - Not yet tested
- SCO - Not yet tested
- SGI - Not yet tested
- Symbian - Not yet tested
- Sequent - Not yet tested
- Siemens - Not yet tested
- SINIX - Not yet tested
- Solaris - Not yet tested
- SONY - Not yet tested
- Sun - Not yet tested
- Stratus - Not yet tested
- Tandem - Not yet tested
- Tru64 - Not yet tested
- Ultrix - Not yet tested
- UNIX - Not yet tested
- U/WIN - Not yet tested
- Unixware - Not yet tested
- VMS - Not yet tested
- VOS - Not yet tested
- Windows
- z/OS - Not yet tested
KNOWN LIMITATIONS
Unix
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 fredIf it is the other way around, it will fail.
Mac
TODO
Contributions
David Dick
Graeme Hart
Piotr Klaban
* 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
SEE ALSO
L<Sys::Hostname>AUTHOR
Originally by Scott Penrose <scottp@dd.com.au>
Contributions: Michiel Beijen <michiel.beijen@gmail.com>
COPYRIGHT
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.