On Wednesday 16 February 2005 13:50 CET Aaron Walker wrote:
> Francesco Riosa wrote:
> > Mike Frysinger ha scritto:
> >> On Tuesday 15 February 2005 03:14 pm, Francesco Riosa wrote:
> >>> Is safe / portable use the $(hostname) inside an ebuild ?
> >[...]
>
> Also keep in mind that Linux is not the only operating system Gentoo runs
> on nowadays. hostname on Linux is not the same as hostname on BSD (which
> by default prints the fully qualified hostname not the short hostname).
> I believe using 'hostname -s' should produce the same output on both
> operating systems.
But are you sure that 'hostname -s' does the thing you intend on all systems
Gentoo might run on?
There's an... ummm... let's call it funny bug for example in the Perl module
Sys::Hostname::Long which uses the command 'hostname --fqdn' to determine
the box' FQDN. Unfortunately doesn't the Solaris hostname support any
switches so the host will be renamed to '--fqdn' when the module is used as
root and, under certain circumstances, falls back to the hostname command.
(See [1] if you want to know the whole story.)
If you really need to do this, try something like
hostname=$(hostname 2>/dev/null)
hostname=${hostname%%.*}
You might also want to try
sysctl -n kernel.hostname
Cheers,
Malte
[1] http://bugzilla.spamassassin.org/show_bug.cgi?id=3806
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