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Re: [Help-bash] Arithmetic evaluation / expansion question
From: |
Chet Ramey |
Subject: |
Re: [Help-bash] Arithmetic evaluation / expansion question |
Date: |
Thu, 11 Oct 2018 10:36:34 -0400 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 |
On 10/10/18 1:25 PM, Andy Chu wrote:
> Right, I have seen this very odd recursive behavior. It doesn't appear to
> be documented, but one of the very first bugs filed against OSH mentions it:
"Within an expression, shell
variables may also be referenced by name without using the parameter
expansion syntax"
and
"The value of a variable is evaluated as an arithmetic expression when
it is referenced"
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU address@hidden http://tiswww.cwru.edu/~chet/
- Re: [Help-bash] Arithmetic evaluation / expansion question, (continued)
- Re: [Help-bash] Arithmetic evaluation / expansion question, Andy Chu, 2018/10/10
- Re: [Help-bash] Arithmetic evaluation / expansion question, Greg Wooledge, 2018/10/10
- Re: [Help-bash] Arithmetic evaluation / expansion question, Andy Chu, 2018/10/10
- Re: [Help-bash] Arithmetic evaluation / expansion question, Andy Chu, 2018/10/10
- Re: [Help-bash] Arithmetic evaluation / expansion question, Bruce Hohl, 2018/10/10
- Re: [Help-bash] Arithmetic evaluation / expansion question, Andy Chu, 2018/10/10
- Re: [Help-bash] Arithmetic evaluation / expansion question, Bruce Hohl, 2018/10/10
- Re: [Help-bash] Arithmetic evaluation / expansion question, Quentin L'Hours, 2018/10/10
- Re: [Help-bash] Arithmetic evaluation / expansion question, Bruce Hohl, 2018/10/10
- Re: [Help-bash] Arithmetic evaluation / expansion question, Chet Ramey, 2018/10/11
- Re: [Help-bash] Arithmetic evaluation / expansion question,
Chet Ramey <=
Re: [Help-bash] Arithmetic evaluation / expansion question, Chet Ramey, 2018/10/11
Re: [Help-bash] Arithmetic evaluation / expansion question, Chet Ramey, 2018/10/11