getgid usage is invalid, mentions FILE while really it should be NAME:
$ getgid --help
Usage: getgid [OPTION]... [FILE]...
Prints ID of given group name.
--help display this help and exit
--version output version information and exit
Report bugs to <[email protected]>.
$ getgid /dev/null
getgid: cannot find group name `/dev/null'
$
coreutils: 6.12
Not sure what version of coreutils this is, but the one from the GNU
project does not have a command called getgid. Maybe you GNU/Linux
distributor added such a command? You should report the bug there,
and a bug that the mail address where to report bugs is incorrect.
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