add option -h for descriptive help

[cfe_generate_password.git] / cfe_generate_password.c

diff --git a/cfe_generate_password.c b/cfe_generate_password.c
index c1378e4..f806b2c 100644 (file)
--- a/cfe_generate_password.c
+++ b/cfe_generate_password.c
@@ -83,10 +83,8 @@ pr_usage(int verbose)
     "  -v                   show version\n"
     "  -s 00:01:02:03:04:05 create seed from MAC address\n"
     "  -t [00000000]        seconds since 1970-01-01 (defaults to NOW) \n"
-    "  -p [SEED]            generate password (with optional seed)\n\n"
-    "  E.g. -s 01:02:03:04:05 \n"
-    "       -s 01:02:03:04:05 -p\n"
-    "       -p 000000030405\n"
+    "  -p [SEED]            generate password (with optional seed)\n"
+    "  -h                   show additional help\n"
     "\n"
     "%s",
     verbose ? help : ""
@@ -208,6 +206,9 @@ main(int argc, char **argv, char **env)
           case 't':
             opt_ts = 1;
             break;
+          case 'h':
+            pr_usage(1);
+            exit(0);
           case 'v':
             fprintf(stderr, "Version: %0.2f\n", VERSION);
         }