[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [bash 4] 'test -v 1' is never true
From: |
Alejandro Colomar |
Subject: |
Re: [bash 4] 'test -v 1' is never true |
Date: |
Sun, 27 Nov 2022 14:00:35 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.0 |
Hi Alexey,
On 11/27/22 12:41, Alexey wrote:
On 2022-11-26 21:45, Alejandro Colomar wrote:
That was my gut; thanks! I'll workaround with $#.
I could suggest you to use for clarity another construction:
[[ ${1+isset} ]] || echo "not set"
Here "isset" is just for readability. You could place any other string literal
there.
I actually find that very confusing. What feature is it using? I couldn't find
it with `info bash | less` then `/\+`.
test $# -ge 1
has the benefit that it's just a sed(1) away from my old
test -v 1
And it only needs the following to be understood:
man test | grep -A1 ' -ge '
man sh | grep ' # '
The old version (test -v 1) required:
help test | grep ' -v '
man sh | sed -n '/^ Positional/,/^$/p'
Both are easy to find.
Regards,
Alexey.
Cheers,
Alex
--
<http://www.alejandro-colomar.es/>
OpenPGP_signature
Description: OpenPGP digital signature