Linux, how to change hostname

I am using RHEL 6.2

My machine gives appearance of thinking its running in 2 different hostname

I see host01 in the following file

/etc/sysconfig/network

But when I do a hostname it says host2

What are all the files where the hostname

Is there a single command to change the host name (and hence all the files where the hostname is stored)
Los Angeles1Asked:
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jgiordanoCommented:
have you changed the name in network and not rebooted?

if you do a hostname <newname> that will change it for everyone logging on from that point forward. A reboot will take whats in /etc/sysconfig/network
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