[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Is bash dying or dead (was Re: 4.1 is "$((( ))) an 'official operato
Re: Is bash dying or dead (was Re: 4.1 is "$((( ))) an 'official operator, if $(( )) isn't?
Wed, 10 Aug 2011 22:32:06 -0400
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:188.8.131.52) Gecko/20110616 Lightning/1.0b2 Thunderbird/3.1.11
On 8/10/11 8:57 PM, Linda Walsh wrote:
> Chet Ramey wrote:
>>> Is this a fluke, due to the above changes NOT being 4.1? Or is
>>> this construction going to break in 4.2:
>>> '$((( )))'
>> What does `break' mean? It's already written in a manner more
>> confusing and obscure than necessary. What value do you think the
>> extra set of parens adds?
> I thought the $( ) was necessary to make the inner (()) an arithmetic
> expression... Does it execute in a sub process?
When even the briefest reading of the manual page would have revealed:
"The format for arithmetic expansion is:
"Command substitution allows the output of a command to replace the com-
mand name. There are two forms:
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU address@hidden http://cnswww.cns.cwru.edu/~chet/