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Old 02-16-2007, 07:50 AM   #1
Registered: Nov 2006
Location: Illinois
Distribution: Ubuntu 10.4
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hostname vs. HOSTNAME ?

What is the difference between issuing a hostname command, e.g.,

hostname mybox,

and changing the environment variable HOSTNAME=mybox ?

Thank you.
Old 02-16-2007, 08:13 AM   #2
Registered: Mar 2003
Location: UK Darlington
Distribution: Fedora Freebsd Centos
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As far as I know the hostname command changes/reports the hostname but it will not survive a reboot - it will revert back to localhost.localdomain
The HOSTNAME variable SETS the hostname as the box boots.

Think thats right. On redhat/fedroa the file is /etc/sysconfig/network

Try it!
Old 02-16-2007, 08:16 AM   #3
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After experimenting, here is my GUESS:

"hostname" changes the hostname immediately, whereas "export HOSTNAME=newname" changes the env variable and would become effective on the next reboot (or login??)
If either method is used it does not affect the other.

I have not tested to see what happens on reboot....


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