detecting no arguments in $@

[dora-solomon]

From: Andreas Kusalananda Kähäri <andreas.kahari@abc.se>
To: dora-solomon@brusseler.com
Subject: Re: detecting no arguments in $@
Date: 25/07/2021 13:11:14 Europe/Paris
Cc: help-bash@gnu.org

On Sun, Jul 25, 2021 at 01:07:53PM +0200, dora-solomon@brusseler.com wrote:
> 
> Is it possible to figure out whether there are no arguments in $@ ?


If there are no positional parameters, i.e. if "$@" is empty, then "$#"
would be zero:

if [ "$#" -eq 0 ]; then
echo 'there were no arguments given'
fi



I was using shift  to get passed some options and if the last arguments did not

contain anymore information such as directory names, I would set defaults.