Comments on: Change hostname or Server name of a Linux Machine

By: Hypnosis

Hypnosis — Mon, 08 Mar 2010 14:49:11 +0000

thanks so very much, had the same idea! btw great site (i love the designing!)

By: felipe1982

felipe1982 — Sun, 28 Feb 2010 11:46:54 +0000

need to change DOMAIN NAME (not hostname). How can I do this?

Mine reads: hostname..domain.tld (i added ‘two dots’ by mistake during install)

By: Vivek

Vivek — Wed, 03 Feb 2010 18:06:10 +0000

Hi,
Can two machines in the same network have same hostname with different IPs. If so, how ping is resolved.

By: Tec4ua

Tec4ua — Tue, 29 Dec 2009 12:28:54 +0000

hi,

thanks for nice and useful info

By: artm

artm — Wed, 25 Nov 2009 10:42:19 +0000

oops, the filenames should be space separated or /etc/{hostname,hosts,mailname,exim4/update-exim4.conf.conf}. And “bin” shoudn’t be Bin.

By: artm

artm — Wed, 25 Nov 2009 10:39:01 +0000

hmm… the last command is interactive for no reason. the following is a better script:

#!/bin/sh


if [ -z "$1" ] ; then

	exit 1

fi
newname=$1

oldname=$(hostname)
for file in /etc/hostname,/etc/hosts,/etc/mailname,/etc/exim4/update-exim4.conf.conf ; do

	sed s:${oldname}:${newname}:g  ${file}.new && mv ${file}.new ${file}

done

hostaname ${newname}

By: artm

artm — Wed, 25 Nov 2009 10:19:38 +0000

to summarize:

#!/bin/sh sed s:$(hostname):$1:g /etc/hosts.new mv /etc/hosts.new /etc/hosts hostaname $1 hostname > /etc/hostname dpkg-reconfigure exim4-config

This is a useful script to have on a virtual machine template so you can rename new VMs easily.

By: Mike

Mike — Wed, 24 Jun 2009 00:12:09 +0000

thanks for the info.. i edit my network file, hosts file and nw when i run the hostname or hostname -f everything points to new name.. but when i telnet my server it shows the old name… wht would be the problem ?

By: Derek S

Derek S — Sat, 21 Mar 2009 02:03:06 +0000

By the fully qualified domain name, does that mean like somehting.com or whatever you want the local hostname to be?

By: lone

lone — Fri, 27 Feb 2009 01:26:35 +0000

Thanks, that is what I am looking for. good note for
/etc/hostname & /etc/hosts

By: WANA

WANA — Sun, 21 Dec 2008 17:40:46 +0000

The mailname serves a different purpose from that of hostname but in many
cases their values are the same. For /etc/mailname, dpkg-reconfigure exim4-config should do it.

By: Sam

Sam — Sat, 20 Dec 2008 07:01:32 +0000

also need to change /etc/mailname to the new name.

By: Flavus

Flavus — Thu, 06 Nov 2008 16:58:04 +0000

Thanks, that what i was looking for.

By: Jamie

Jamie — Mon, 29 Sep 2008 16:09:22 +0000

Just what I needed
Thanks for this great post!

By: Raymond Day

Raymond Day — Thu, 07 Aug 2008 09:25:49 +0000

You have to edit the /etc/host file too. Not just /etc/hostname.

-Raymond Day

By: Sean

Sean — Sun, 27 Jul 2008 13:54:58 +0000

My question is should you put the whole FQDN in the hostname file for a permanent change, or just the hostname itself?

By: platypusjh

platypusjh — Sun, 13 Jul 2008 18:54:20 +0000

Nope. It’s “hostname --fqdn” or “hostname -f”

Sorry, couldn’t resist since everyone else was nitpicking.

Thanks for the excellent article. Worked like a charm!

By: cmos

cmos — Mon, 07 Jul 2008 18:26:21 +0000

I think that should be hostname --fqdn

By: jam

jam — Fri, 13 Jun 2008 13:25:01 +0000

hostname -fqd didn’t work…
I think it should jsut be hostname -f ?

I may be wrong though..
But thanks

JAM

By: Ricky

Ricky — Mon, 21 Jan 2008 16:08:47 +0000

Thanks… very useful information.