From owner-freebsd-questions  Wed Nov  1 23:59:22 2000
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Date: Wed, 1 Nov 2000 23:47:20 -0800
From: "Crist J . Clark" <cjclark@reflexnet.net>
To: Steve Price <sprice@hiwaay.net>
Cc: freebsd-questions@FreeBSD.ORG
Subject: Re: 'crontab -e' woes
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References: <20001101210426.A57642@bsd.planetwe.com>
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On Wed, Nov 01, 2000 at 09:04:26PM -0600, Steve Price wrote:
> Howdy all,
> 
> Don't know if it is just a couple of days of absolutely no
> sleep or what but I've been scratching my over head what
> should be a simple problem.
> 
> Basically what I'm trying to do is setup a non-interactive
> script that edits my crontab.  When I type the following
> commands in it comments out the first entry.  However, when
> I run it by redirecting stdin from a file it doesn't work.
> >From the looks of it (note the 37 -> 38 change) the file
> is being updated but crontab is ignoring the change.
> 
> steve@bsd(/tmp)$ crontab -l
> # DO NOT EDIT THIS FILE - edit the master and reinstall.
> # (/tmp/crontab.teFMi62568 installed on Wed Nov  1 20:47:27 2000)
> # (Cron version -- $FreeBSD: src/usr.sbin/cron/crontab/crontab.c,v 1.12 1999/08/28 01:15:52 peter Exp $)
> */1     *       *       *       *       /home/steve/bin/bogus.sh
> steve@bsd(/tmp)$ cat cmds
> 1s/^/#/
> wq
> steve@bsd(/tmp)$ env VISUAL=/bin/ed crontab -e < cmds
> 37
> 38
> crontab: no changes made to crontab
> steve@bsd(/tmp)$ cat cmds | env VISUAL=/bin/ed crontab -e        
> 37
> 38
> crontab: no changes made to crontab
> steve@bsd(/tmp)$ 
> 
> Can anyone tell what I'm doing wrong?  Thanks.

Don't ask me why, but try this,

  $ { echo '1s/^/#/'; echo w; } | env VISUAL=/bin/ed crontab -e

And see what happens. (Just lost the 'q.')
-- 
Crist J. Clark                           cjclark@alum.mit.edu


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