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    Tuesday, April 28, 2009
    Change hostname in Linux
    Hello Everyone!!!

    First you need to find out your hostname, you can do this with

    $ hostname
    localhost.localdomain
    $


    Edit /etc/hosts
    You need to edit /etc/hosts and add a line for your host name

    $ cat /etc/hosts
    # Do not remove the following line, or various programs
    # that require network functionality will fail.
    127.0.0.1 localhost.localdomain localhost
    $


    My new server IP is 72.232.196.90, i need to assign it hostname server12.hosthat.com, to do this, i have edited /etc/hosts as follows.

    # Do not remove the following line, or various programs
    # that require network functionality will fail.
    127.0.0.1 localhost.localdomain localhost
    72.232.196.90 server12.hosthat.com server12


    Edit /etc/sysconfig/network
    First lets see what is in the file

    $ cat /etc/sysconfig/network
    NETWORKING=yes
    HOSTNAME=localhost.localdomain
    $


    To change servers hostname to server12.hosthat.com, change the file as follows.

    $ cat /etc/sysconfig/network
    NETWORKING=yes
    HOSTNAME=server12.hosthat.com
    $


    Now you need to reboot the server to change the hostname.

    Happy Learning
    --Sreene

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    posted by Srinivasan .R @ 5:30 AM  
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    Name: Srinivasan .R
    Home: Chennai, India

    About Me:
    I am working as an Oracle Applications DBA specializing in EBS 11i/R12 with Over 14+ years of experience, mainly in different versions of Oracle Database & Application administration on various platforms like HP-UX, SOLARIS, AIX, Red hat Linux & Windows
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