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Re: [Help-bash] Is there a syntax to declare -p address@hidden
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From: |
Chet Ramey |
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Subject: |
Re: [Help-bash] Is there a syntax to declare -p address@hidden |
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Date: |
Fri, 7 Dec 2018 09:23:23 -0500 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:60.0) Gecko/20100101 Thunderbird/60.3.2 |
On 12/6/18 11:12 PM, Peng Yu wrote:
> How to understand why `echo address@hidden only print an empty line?
Consider that
1. `$' is a special parameter, not a variable; as such
2. It's not a valid argument to `set', `declare', or an assignment
statement; because
3. It's not user-assignable at all, so there's no way to "recreate the
current value."
--
``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/
- [Help-bash] Is there a syntax to declare -p address@hidden, Peng Yu, 2018/12/04
- Re: [Help-bash] Is there a syntax to declare -p address@hidden, Grisha Levit, 2018/12/04
- Re: [Help-bash] Is there a syntax to declare -p address@hidden, Peng Yu, 2018/12/04
- Re: [Help-bash] Is there a syntax to declare -p address@hidden, Tadeus Prastowo, 2018/12/05
- Re: [Help-bash] Is there a syntax to declare -p address@hidden, Peng Yu, 2018/12/05
- Re: [Help-bash] Is there a syntax to declare -p address@hidden, Peng Yu, 2018/12/06
- Re: [Help-bash] Is there a syntax to declare -p address@hidden, Dennis Williamson, 2018/12/06
- Re: [Help-bash] Is there a syntax to declare -p address@hidden, Peng Yu, 2018/12/06
- Re: [Help-bash] Is there a syntax to declare -p address@hidden, Dennis Williamson, 2018/12/06
- Re: [Help-bash] Is there a syntax to declare -p address@hidden,
Chet Ramey <=
Re: [Help-bash] Is there a syntax to declare -p address@hidden, Chris F.A. Johnson, 2018/12/04