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Re: Is the description of set -- missing in man bash or at least difficu

From: Chet Ramey
Subject: Re: Is the description of set -- missing in man bash or at least difficult to find?
Date: Fri, 23 Dec 2011 15:02:38 -0500
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:8.0) Gecko/20111105 Thunderbird/8.0

On 12/22/11 9:24 PM, Peng Yu wrote:

> "If no arguments follow this option, then the positional parameters $@
> are unset.  Otherwise, the positional parameters $@ are set to the
> args, even if some of them begin with a -."

Not to put *too* fine a point on it, but this is completely wrong.  You
appear to be throwing `$@' in there randomly because you want to search
for that string.

The name of the parameter is `@', just as the name of the HOME environment
variable is `HOME'.  It's value is dynamic -- the current set of
positional parameters.  You use `$@' to dereference it.

Look at
for more information.
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/

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