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From: Xu Qiang <Qiang.Xu@fujixerox.com>
To: dpk <dpk@dpk.net>, Xu Qiang <Qiang.Xu@fujixerox.com>
Date: Fri, 12 Aug 2005 11:29:04 +0800
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Cc: Giorgos Keramidas <keramida@ceid.upatras.gr>, freebsd-questions@freebsd.org
Subject: RE: Help on bash script?
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dpk wrote:
> It will work with either 'let' or within an 'arithmetic expansion':
> =

> $[++var]
> let ++var
> =

> By the way, there is another syntax, from the man page, that seems to
> operate identically:
> =

> $((++var)) and $((var+1))

With "let ++var", the result is still 0, it isn't incremented. With $[++var=
], the result is "0: command not found".
"$((++var))" is to the same effect as "let ++var". =


$((var+1)) works. But the value of var can't be incremented. =


thanks, =

Xu Qiang