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From: chris@mimsy.UUCP
Newsgroups: comp.unix.questions
Subject: Re: prompt wars
Message-ID: <5823@mimsy.UUCP>
Date: Sun, 15-Mar-87 01:12:53 EST
Article-I.D.: mimsy.5823
Posted: Sun Mar 15 01:12:53 1987
Date-Received: Sun, 15-Mar-87 13:37:32 EST
References: <1480@umd5>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 23
Summary: sed beats awk; precomputation; no shell scripts

In article <1480@umd5> zben@umd5 (Ben Cranston) writes:
>   alias set_prompt 'set prompt="`hnm1`[\\!] `dirs|cdt2` % "'

>in "~/bin/hnm1":

>   #! /bin/sh
>   # output user-friendly head of host name
>
>   hostname | awk -F. '{ print $1 }'

Instead of using a shell script and awk, it is much faster to do this:

    set hostname=`hostname | sed -e 's/\..*//'`
    alias set_prompt 'set prompt="${hostname}[\\!] `dirs|cdt2` % "'

Likewise, using `sed' to change `/usr/spool/news/comp/unix/questions'
to `...unix/questions' is also faster, and if done in an alias rather
than in a shell script, should be as fast as the C program Ben wrote.

The sed commands to do this are left as an exercise to the reader. :-)
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7690)
UUCP:	seismo!mimsy!chris	ARPA/CSNet:	chris@mimsy.umd.edu