Re: GROUPS

[Greg Wooledge]

On Wed, Aug 11, 2021 at 08:00:12PM -0400, Franklin, Jason wrote:
> This doesn't work unless it was recently fixed.  A variation does...
> 
> bash-5.0$ echo $BASH_VERSION
> 5.0.17(1)-release
> bash-5.0$ GROUPS=FOO bash -c 'echo $GROUPS'
> 1000
> bash-5.0$ GROUPS=FOO bash --posix -c 'echo $GROUPS'
> 1000
> bash-5.0$ env GROUPS=FOO bash -c 'echo $GROUPS'
> FOO
> bash-5.0$ env GROUPS=FOO bash --posix -c 'echo $GROUPS'
> FOO

You can't overwrite GROUPS while you're inside of bash, apparently not
even in the temporary assignment context before a simple command.  So,
in order for the first form to work as expected, you'd have to be in a
shell other than bash.

unicorn:~$ ksh
$ GROUPS=FOO bash -c 'echo "$GROUPS"'
FOO

And so on.  Either that, or unset GROUPS first.