maddr: add usage

8 years ago · a6c5af2a72
parent 9cdc8d3399
commit a6c5af2a72
1 changed files with 13 additions and 13 deletions
--- a/maddr.c
+++ b/maddr.c
@ -63,7 +63,7 @@ main(int argc, char *argv[])
 		switch(c) {
 		case 'h': hflag = optarg; break;
 		default:
-                        // XXX usage
+			fprintf(stderr, "Usage: maddr [-h headers] [msgs...]\n");
 			exit(1);
 		}