---
btrfs-debugfs | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/btrfs-debugfs b/btrfs-debugfs
index dfb8853..70419fa 100755
--- a/btrfs-debugfs
+++ b/btrfs-debugfs
@@ -392,7 +392,9 @@ parser.add_argument('-f', '--file', action='store_const',
const=1, help='get fil
args = parser.parse_args()
-if args.block_group:
+if not (args.block_group or args.file):
+ print "No arguments passed. Type 'btrfs-debugfs -h' for usage."
+elif args.block_group:
for i in args.path[0:]:
print_block_groups(i)
elif args.file:
--
2.7.4
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