I am looking an neat trick / elegant solution to
manipulate / modify hostname and set a variable to the
value inside a script. I have figured what I want to do.
I just want to know how to set the variable correctly ?

Say my host name is 'machine005' (w/o single quotes)

So the hostname command would be

hostname
machine005

fine. If I want to change the first '0' to a '9' then

hostname|sed 's/0/9/' <-- (produces)
machine905

So I would like to set the command string in bold
above to be the value of a variable inside a string.

Does the following do this

setenv VAR "hostname|sed \'s/0/9/\'"

It seems that Double/Single quotes don't play nice
together. So I am trying to figure this out.

Any assistance would be appreciated.

maddog.

I found this works (on Cygwin)

Var=`hostname|sed 's/0/9/'`

This would produce in post above hostname=machine901.

Hooray!

maddog.