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Re: Request for enhancement: links to 'true' and 'false'
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From: |
Eric Blake |
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Subject: |
Re: Request for enhancement: links to 'true' and 'false' |
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Date: |
Mon, 22 Apr 2013 06:40:34 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130402 Thunderbird/17.0.5 |
On 04/20/2013 11:28 AM, Bob Proulx wrote:
> But even expr is now obsoleted by built in shell math. Use ((...)) to
> perform the math in the shell with no external program calls.
In bash, yes, but not portable. $(()) is standardized by POSIX, but
(()) is not, and has some surprising corner cases because it is not
standardized.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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