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Path: utzoo!mnetor!seismo!mimsy!zben
From: zben@mimsy.UUCP (Ben Cranston)
Newsgroups: comp.unix.questions
Subject: Re: prompt wars
Message-ID: <5873@mimsy.UUCP>
Date: Wed, 18-Mar-87 15:09:58 EST
Article-I.D.: mimsy.5873
Posted: Wed Mar 18 15:09:58 1987
Date-Received: Fri, 20-Mar-87 01:53:40 EST
References: <1480@umd5> <5823@mimsy.UUCP>
Reply-To: zben@mimsy.UUCP (Ben Cranston)
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 22
Summary: All done in one hideous alias

In article <5823@mimsy.UUCP> chris@mimsy.UUCP (Chris Torek) writes:

> 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. :-)

Well, this alias seems to do the trick.  It seems a little slow, but this
is mimsy rather than umd5 so I don't have the basis for comparison...

alias set_prompt 'set prompt="`hostname|sed -e '\''s|\..*||'\''`[\\!] `dirs|sed -e '\''s| .*||'\'' -e '\''s|.*[^/]\(/[^/]*/[^/]*\)|...\1|'\''` % "'

It could probably be decomposed in the way Chris suggests...
-- 
                    umd5.UUCP    <= {seismo!mimsy,ihnp4!rlgvax}!cvl!umd5!zben
Ben Cranston zben @ umd2.UMD.EDU    Kingdom of Merryland UniSys 1100/92
                    umd2.BITNET     "via HASP with RSCS"