Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/18/84; site rlgvax.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!genrad!panda!talcott!harvard!seismo!trwatf!rlgvax!peter
From: peter@rlgvax.UUCP (Peter Klosky)
Newsgroups: net.unix,net.bugs
Subject: Re: echo command always prints its arguments
Message-ID: <613@rlgvax.UUCP>
Date: Sun, 21-Apr-85 20:49:56 EST
Article-I.D.: rlgvax.613
Posted: Sun Apr 21 20:49:56 1985
Date-Received: Wed, 24-Apr-85 03:17:38 EST
References: <797@u1100a.UUCP>, <254@tellab3.UUCP>, <1581@ukma.UUCP> <498@nbs-amrf.UUCP> <103@denning.uucp>
Organization: CCI Office Systems Group, Reston, VA
Lines: 15
Xref: watmath net.unix:4316 net.bugs:630

trmsg(na)
+++ Using echo to put data on the file system can be tricky.
+++ The following script would truncate it's file regularly due to
+++ the window between the shell performing
+++ the i/o redirection and the echo program being invoked, given 
+++ a signal in the window.

if test -f .jobname
 then
     lastjob=`cat .jobname`
else
     lastjob=0
fi
thisjob=`expr $lastjob + 1`
echo $thisjob >.jobname