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From: mike@BRL.ARPA (Mike Muuss)
Newsgroups: net.unix-wizards
Subject: .cshrc efficiency note
Message-ID: <485@brl-smoke.ARPA>
Date: Thu, 1-May-86 20:25:59 EDT
Article-I.D.: brl-smok.485
Posted: Thu May  1 20:25:59 1986
Date-Received: Sun, 4-May-86 06:43:14 EDT
Sender: news@brl-smoke.ARPA
Lines: 14

If your .cshrc contains a like like:

set prompt=\!\ "`hostname`>"\ 

then this will cause the /bin/hostname program to be run FOR EVERY
PROMPT that the CSH prints out!  This can be a non-trivial load if
20-30 people are doing this.  Instead, I recommend the two line replacement:

set hostname=`hostname`
set prompt=\!\ "$hostname"\>\ 

since it is unlikely that the host name will change during a login
session.
	-Mike