GPG command not found about pwd.sh HOT 3 CLOSED

Use '/usr/bin/env gpg'

from pwd.sh.

I've decided to go with which. Thanks!

from pwd.sh.

I was giving a try to gpg="/usr/bin/env gpg" (which I think is meant to be used in case like this one and at least does work both in OS X and Ubuntu). It does work as I said, but does produce the following warning:

./pwd.sh
# => ./pwd.sh: line 177: [: /usr/bin/env: binary operator expected

I think I know why: because of the whitespace in "/usr/bin/env gpg", in line 177 ${gpg} does produce more arguments that [] did expect. (For example, "/usr/bin/gpg" does not produce any error - in Ubuntu.)

I tried using single and double quotes, I also tried escaping the whitespace but the issue goes beyond my knowledge of bash variables and operators... any idea of which would be the appropriate syntax?

from pwd.sh.