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and subject line Bug#295892: Extra columns ":" in "exit 0" lines of initscripts
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Date: Fri, 18 Feb 2005 21:53:31 +0100
From: Alessandro Garberi <[EMAIL PROTECTED]>
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Subject: Extra columns ":" in "exit 0" lines of initscripts
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Package: sysvinit
Version: 2.84-2woody1
I'm not sure this is a bug, but I think so!
Almost every initscript (/etc/init.d/*) ends with "exit 0", but ten of
theese files have a column (:) before the line.
I think this prevents the line to be executed.
Here follows the command I used to list the files and the list of files.
Note that two of them (bootmisc.sh and checkroot.sh) have 2 more lines
starting with column, please check them too!
--- Command ---
gateway:/etc/init.d# grep ^\[[:space:]]*: *
bootmisc.sh:: > /var/run/utmp
bootmisc.sh:: exit 0
checkfs.sh:: exit 0
checkroot.sh: : > /etc/mtab
checkroot.sh:: exit 0
halt:: exit 0
mountall.sh:: exit 0
mountnfs.sh:: exit 0
rmnologin:: exit 0
sendsigs:: exit 0
umountfs:: exit 0
umountnfs.sh:: exit 0
--- List of files ---
bootmisc.sh
checkfs.sh
checkroot.sh
halt
mountall.sh
mountnfs.sh
rmnologin
sendsigs
umountfs
umountnfs.sh
My system is:
Debian 3.0 (Woody) - i386
Thanks for your attention!
Alessandro
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Date: Sat, 19 Feb 2005 14:03:03 +0000
From: Miquel van Smoorenburg <[EMAIL PROTECTED]>
Subject: Re: Bug#295892: Extra columns ":" in "exit 0" lines of initscripts
To: Thomas Hood <[EMAIL PROTECTED]>
Cc: [EMAIL PROTECTED], [EMAIL PROTECTED]
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On Fri, 18 Feb 2005 22:15:25, Thomas Hood wrote:
> On Fri, 2005-02-18 at 21:53 +0100, Alessandro Garberi wrote:
> > I'm not sure this is a bug, but I think so!
> > Almost every initscript (/etc/init.d/*) ends with "exit 0", but ten of=20
> > these files have a column (:) before the line.
>=20
>=20
> Yes. Weird. I wonder what the purpose is.
It's just a matter of taste. Since a shell script exits with
the status of the last command executed, and the exit value
of ":" is always 0, "exit 0" and ": exit 0" at the end of
a shell script are functionally equivalent.
I tend to use ": exit 0" at the end of a .sh script because
the .sh scripts are sourced, and exit 0 might also exit the
calling shell script. ": exit 0" just makes that more
explicit.
Since /etc/init.d/rc call the .sh shell scripts in a
seperate environment using ( .. ) this cannot happen, so
I could just use "exit 0" (or no exit at all), but still,
it doesn't really matter.
Mike.
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