mount.nfs --version (return code: 0)
mount.nfs: (linux nfs-utils 1.3.3)
mount.nfs --help (return code: 1)
usage: mount.nfs remotetarget dir [-rvVwfnsh] [-o nfsoptions]
options:
-r Mount file system readonly
-v Verbose
-V Print version
-w Mount file system read-write
-f Fake mount, do not actually mount
-n Do not update /etc/mtab
-s Tolerate sloppy mount options rather than fail
-h Print this help
nfsoptions Refer to mount.nfs(8) or nfs(5)