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Re: Question about arithmetic logic.
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From: |
Greg Wooledge |
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Subject: |
Re: Question about arithmetic logic. |
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Date: |
Mon, 18 Apr 2011 10:40:14 -0400 |
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User-agent: |
Mutt/1.4.2.3i |
On Mon, Apr 18, 2011 at 10:30:35AM -0400, Steven W. Orr wrote:
> ss=1
> (( ss ))
> echo $? # Also says 1. Should this be 0 because it should be
> the
> # success result same as (( ss != 0 ))
That's not what I get:
imadev:~$ unset ss; ss=0; ((ss)); echo $?
1
imadev:~$ unset ss; ss=1; ((ss)); echo $?
0
I use flag variables like this all the time. The only difference is
that I do not use "typeset -i" on them.