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Re: function with description
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From: |
Lawrence Velázquez |
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Subject: |
Re: function with description |
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Date: |
Mon, 28 Jun 2021 20:30:40 -0400 |
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User-agent: |
Cyrus-JMAP/3.5.0-alpha0-530-gd0c265785f-fm-20210616.002-gd0c26578 |
On Mon, Jun 28, 2021, at 7:40 PM, lisa-asket@perso.be wrote:
> >You can add argument (option) processing and have the function print a
> >usage message to stderr (or stdout) when invoked incorrectly. One of my
> >earlier examples did precisely that.
>
> Is that when you used
>
> if (($# != 3)); then
> echo 'usage: print-lines startnum endnum startdir' >&2
> return 1
> fi
>
> Need something more elaborate than that. Something that matches
>
> "help", "-h", "-?" and "--help".
https://mywiki.wooledge.org/BashFAQ/035
--
vq