Solaris 11 has GNU stat (handled by *)
Solaris 10 (and older?) does not have stat (handled by failing command -v stat)
On Solaris 10 (at least on UFS), setgid cannot be set on directories.
Unlike on other systems `chmod 2400` is not `-r----S---`, but `-r----l---`.
Some embedded systems (like OpenWrt) do not ship a stat(1) binary.
This workaround parses the output of ls(1) and /etc/passwd, /etc/group to
gather the information needed.
The group, mode, and owner are now pulled from a explorers. If the
desired value matches the existing value, then no code is executed.
If the recursive flag is set, the permissions are applied every run.