Prettify usage()

[babeltrace.git] / converter / babeltrace.c

diff --git a/converter/babeltrace.c b/converter/babeltrace.c
index cc7eabc40264b61324e47099f7d5d7e9f6f2d178..ce7664a834d7ddeb1ce01ac3677e7635e1ad7d26 100644 (file)
--- a/converter/babeltrace.c
+++ b/converter/babeltrace.c
@@ -72,18 +72,18 @@ static void usage(FILE *fp)
        fprintf(fp, "BabelTrace Trace Converter %u.%u\n\n",
                BABELTRACE_VERSION_MAJOR,
                BABELTRACE_VERSION_MINOR);
-       fprintf(fp, "usage : babeltrace [OPTIONS] INPUT OUTPUT\n");
+       fprintf(fp, "usage : babeltrace [OPTIONS] INPUT <OUTPUT>\n");
        fprintf(fp, "\n");
-       fprintf(fp, "  INPUT               Input trace path\n");
-       fprintf(fp, "  OUTPUT              Output trace path\n");
+       fprintf(fp, "  INPUT                          Input trace path\n");
+       fprintf(fp, "  OUTPUT                         Output trace path (default: stdout)\n");
        fprintf(fp, "\n");
-       fprintf(fp, "  -i, --input-format  Input trace path\n");
-       fprintf(fp, "  -o, --output-format Input trace path\n");
+       fprintf(fp, "  -i, --input-format FORMAT      Input trace format (default: ctf)\n");
+       fprintf(fp, "  -o, --output-format FORMAT     Output trace format (default: text)\n");
        fprintf(fp, "\n");
-       fprintf(fp, "  -h, --help          This help message\n");
-       fprintf(fp, "  -l, --list          List available formats\n");
-       fprintf(fp, "  -v, --verbose       Verbose mode\n");
-       fprintf(fp, "  -d, --debug         Debug mode\n");
+       fprintf(fp, "  -h, --help                     This help message\n");
+       fprintf(fp, "  -l, --list                     List available formats\n");
+       fprintf(fp, "  -v, --verbose                  Verbose mode\n");
+       fprintf(fp, "  -d, --debug                    Debug mode\n");
        list_formats(fp);
        fprintf(fp, "\n");
 }