On 2009-12-29 14:09:49 +0100, Jeremiah Foster wrote: > On one of my machines apticron uses a call to hostname -f, which > fails, while uname -n succeeds.
"uname -n" doesn't necessarily return the FQDN. xvii% uname -n xvii xvii% hostname xvii xvii% hostname -f xvii.vinc17.org xvii% cat /etc/hostname xvii Note in the hostname(1) man page: /etc/hostname This file should only contain the hostname and not the full FQDN. > Perhaps it should be a bug to use hostname -f since it unreliable? When the machine is correctly configured (i.e. really has a FQDN), "hostname -f" is reliable. But note that this is Debian-specific. FYI, here's how one can get the FQDN in Perl (gethostbyname is no longer in POSIX, but it currently works in practice... or perhaps "hostname" has something more reliable?): #!/usr/bin/env perl use strict; use POSIX; my $nodename = (POSIX::uname)[1]; print "Nodename: $nodename\n"; print "FQDN: ", (gethostbyname $nodename)[0], "\n"; (You would do the same thing in other languages: uname, then gethostbyname.) -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <http://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / Arénaire project (LIP, ENS-Lyon) -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
