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Date:	Mon, 05 Mar 2012 09:37:50 -0700
From:	Eric Blake <eblake AT redhat DOT com>
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Subject:	Re: base-files: New files to fix permission issues (was Re: 1.7.10/1.7.11: .Net programs started from a cygwin console may fail.)
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On 03/05/2012 07:13 AM, Nellis, Kenneth wrote:
> From: Corinna Vinschen
>=20
>> Thanks for the review.  Like this?
>=20
> If you're open to improvements, the form
> 	x=3D$(($x + 1))
> could arguably be improved with any of the following:
> 	x=3D$((x + 1))

Still POSIX, and supported by /bin/sh (even where /bin/sh is dash)

> 	let x=3Dx+1
> 	((x=3Dx+1))
> 	((x++))
> 	((++x))

all bash extensions, so requires /bin/bash.

Also, be careful of ((x++)) - if x starts life 0, then that sets $? to 1.

--=20
Eric Blake   eblake AT redhat DOT com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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