Path: utzoo!attcan!uunet!wuarchive!ukma!usenet.ins.cwru.edu!news
From: news@usenet.ins.cwru.edu
Newsgroups: comp.unix.shell
Subject: Re: bourne sh, problems with var setting in case/esac
Keywords: sh, case
Message-ID: <1990Nov15.155604.16714@usenet.ins.cwru.edu>
Date: 15 Nov 90 15:56:04 GMT
References: <1236@netmuc.UUCP>
Reply-To: chet@po.CWRU.Edu
Distribution: comp
Organization: Case Western Reserve Univ. Cleveland, Ohio, (USA)
Lines: 19
Nntp-Posting-Host: thor.ins.cwru.edu

In article <1236@netmuc.UUCP> bothe@net7.uucp writes:

>if i don't pipe esac and not use cat, all is ok, but i want to pipe !

In the immortal words of Guy Harris (or is that the words of the immortal
Guy Harris? :-):

	``You've been zapped by Mr. Subshell''

Sh runs control structures with pipes in a subshell.  Variables set in a
subshell cannot affect the parent's settings.

Chet
-- 
Chet Ramey				``I die, Horatio''
Network Services Group, Case Western Reserve University
chet@ins.CWRU.Edu
                My opinions are just those, and mine alone.