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Article #1208

Re: Background writes in csh

#1208
From: Joseph Wells
Date: Sat, 22 Sep 1990 02:30
29 lines
1862 bytes
In article <1990Sep20.185147.14158@ping.uucp> gorpong@ping.uucp (Gordon C. Galligher) writes:

   In article <1990Sep19.203803.25798@cs.umn.edu> (Paul Lindner) writes:
   >I've been having a weird problem for the longest time.  I like to use`
   >aliases for my ls command:
   >
   >   alias ls 'ls -FC \!* |more'
   >
   >This works fine, however sometimes it stops both tasks and puts them in 
   >the background, (this is on various Suns using csh and tcsh).  Typing
   >fg restarts the listing.  This is really irritating, typing fg and all.
   >
   >I've also had this problem on the IBM RS/6000.  Except in this case
   >typing fg just hangs the shell.

   More(1) is the problem here.  I have not quite figured it out, but I had a 
   similar problem when my users would type:  history | more and it would do
   the same thing.  When they use history | less  it works every time.

I suspect you're wrong, because there is a known problem with Sun's csh
that causes this problem with pipelines in general.  It's a race condition
during the setup of the pipeline by the csh.  I suspect that less works
because it has a larger executable file and thus takes slightly longer for
SunOS to load.

I don't know about the problem on the IBM RS/6000.

-- 
Joe Wells <jbw@bu.edu>
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From: jbw@bucsf.bu.edu (Joseph Wells)
Newsgroups: comp.unix.shell
Subject: Re: Background writes in csh
Message-ID: <JBW.90Sep21223022@bucsf.bu.edu>
Date: 22 Sep 90 02:30:22 GMT
References: <1990Sep19.203803.25798@cs.umn.edu>
 <1990Sep20.185147.14158@ping.uucp>
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Organization: Boston University Computer Science Department
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In-reply-to: gorpong@ping.uucp's message of 20 Sep 90 18:51:47 GMT