Currently any unrecognized option does not print very usable message and
only dumps the whole help. Other common utilities (eg. from the
util-linux suite) print a short message and point to help. And we're
going to do the same.
Example:
$ btrfs device add --unknown device path
btrfs device add: unrecognized option '--unknown'
Try 'btrfs device add --help' for more information
Signed-off-by: David Sterba <dsterba@suse.com>
Parameter usagestr is not used, remove it.
Signed-off-by: Gu Jinxiang <gujx@cn.fujitsu.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
David Sterba