How to change computer name

[Joe-Cho]

Hello,

It  is strange to ask this kind of questions but I have a courage to ask
since it is a Friday night.

How can I change compute name at Linux/UNIX?
I have a Solaris box, I haven't really  changed computer name after I set up
the system.
but I guess  it is time to learn changing computer name.

I thought changing compute name on Solaris is just changing  /etc/hosts,
but it is not simple.

Any suggestions??

A member of  KCLUG,