p7zip -V (return code: 1)
/usr/bin/p7zip: cannot read version
p7zip --help (return code: 0)
Usage: /usr/bin/p7zip [options] [--] [ name ... ]
Options:
-c --stdout --to-stdout output data to stdout
-d --decompress --uncompress decompress file
-f --force do not ask questions
-k --keep keep original file
-h --help print this help
-- treat subsequent arguments as file
names, even if they start with a dash