mshow: add usage

8 years ago · 905851a851
parent 3d694808eb
commit 905851a851
1 changed files with 7 additions and 1 deletions
--- a/mshow.c
+++ b/mshow.c
@ -636,7 +636,13 @@ main(int argc, char *argv[])
 		case 'R': Rflag = 1; break;
 		case 'n': nflag = 1; break;
                default:
-                        // XXX usage
+			fprintf(stderr,
+			    "Usage: mshow [-h headers] [-qrHL] [msgs...]\n"
+			    "       mshow -x msg parts...\n"
+			    "       mshow -O msg parts...\n"
+			    "       mshow -t msgs...\n"
+			    "       mshow -R msg\n"
+			);
                        exit(1);
                }