[4/5] btrfs-progs: btrfs-crc: improve usage message

Commit Message

Satoru Takeuchi June 2, 2016, 8:13 a.m. UTC

- If -c is set, filename argument is ignored.
- Describe about -h option

Signed-off-by: Satoru Takeuchi <[e-mail]>
---
  btrfs-crc.c | 4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

Patch

diff --git a/btrfs-crc.c b/btrfs-crc.c
index 55a4c61..c2b5f00 100644
--- a/btrfs-crc.c
+++ b/btrfs-crc.c
@@ -26,10 +26,12 @@  void print_usage(int status)
  {
  	printf("usage: btrfs-crc filename\n");
  	printf("    print out the btrfs crc for \"filename\"\n");
-	printf("usage: btrfs-crc filename -c crc [-s seed] [-l length]\n");
+	printf("usage: btrfs-crc -c crc [-s seed] [-l length]\n");
  	printf("    brute force search for file names with the given crc\n");
  	printf("      -s seed    the random seed (default: random)\n");
  	printf("      -l length  the length of the file names (default: 10)\n");
+	printf("usage: btrfs-crc -h\n");
+	printf("    print this message\n");
  	exit(status);
  }