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Re: getting weird output out of 'echo' w/args
From: |
Davide Brini |
Subject: |
Re: getting weird output out of 'echo' w/args |
Date: |
Thu, 30 May 2013 11:04:47 +0200 |
On Thu, 30 May 2013 16:56:36 +0800, Chris Down <chris@chrisdown.name> wrote:
> Pierre is referring to the fact that [i++] is evaluated as a glob by
> the shell, the reason it doesn't work is because $i is postincremented
> instead of preincremented. You can see what he means here:
>
> $ shopt -u nullglob
> $ i=0
> $ while read a[++i]; do
> > echo "${a[i]}"
> > done <<< hello
> hello
> $ shopt -s nullglob
> $ while read a[++i]; do
> > echo "${a[i]}"
> > done <<< hello
>
> $
But he was doing postincrement, so it wouldn't have worked anyway, since
the code was assigning to a[0] and printing a[1].
PS: Better put a
a=()
before each run.
--
D.
- getting weird output out of 'echo' w/args, Linda Walsh, 2013/05/29
- Re: getting weird output out of 'echo' w/args, Chet Ramey, 2013/05/29
- Re: getting weird output out of 'echo' w/args, Linda Walsh, 2013/05/29
- Re: getting weird output out of 'echo' w/args, Pierre Gaston, 2013/05/30
- Re: getting weird output out of 'echo' w/args, Davide Brini, 2013/05/30
- Re: getting weird output out of 'echo' w/args, Chris Down, 2013/05/30
- Re: getting weird output out of 'echo' w/args,
Davide Brini <=
- Re: getting weird output out of 'echo' w/args, Chris Down, 2013/05/30
- Re: getting weird output out of 'echo' w/args, Davide Brini, 2013/05/30
- Re: getting weird output out of 'echo' w/args, Pierre Gaston, 2013/05/30
- Re: getting weird output out of 'echo' w/args, Linda Walsh, 2013/05/30
- Re: getting weird output out of 'echo' w/args, Chris Down, 2013/05/30
- Re: getting weird output out of 'echo' w/args, Linda Walsh, 2013/05/30