btrfs-progs: print compact help for btrfs

Running 'btrfs' without arguments will print complete help that spans
a lot of lines and is really helpful. Print only subcommand group
names with short descriptions, similar to what 'git' does.

Signed-off-by: David Sterba <dsterba@suse.cz>

1 files changed, 1 insertions, 1 deletions

diff --git a/btrfs.c b/btrfs.c
index f0fa848b..63df377a 100644
--- a/btrfs.c
+++ b/btrfs.c
@@ -230,7 +230,7 @@ int main(int argc, char **argv)
 			if (!prefixcmp(argv[0], "--"))
 				argv[0] += 2;
 		} else {
-			usage_command_group(&btrfs_cmd_group, 0, 0);
+			usage_command_group_short(&btrfs_cmd_group);
 			exit(1);
 		}
 	}