diff -urN ttyrec-1.0.5_original/Makefile ttyrec-1.0.5/Makefile
--- ttyrec-1.0.5_original/Makefile	Fri Feb 15 16:13:17 2002
+++ ttyrec-1.0.5/Makefile	Mon Aug 19 17:48:17 2002
@@ -2,7 +2,8 @@
 CFLAGS = -O2
 VERSION = 1.0.5
 
-TARGET = ttyrec ttyplay ttytime
+SUFFIX = 
+TARGET = ttyrec$(SUFFIX) ttyplay$(SUFFIX) ttytime$(SUFFIX)
 
 DIST =	ttyrec.c ttyplay.c ttyrec.h io.c io.h ttytime.c\
 	README Makefile ttyrec.1 ttyplay.1
diff -urN ttyrec-1.0.5_original/ttytime.c ttyrec-1.0.5/ttytime.c
--- ttyrec-1.0.5_original/ttytime.c	Fri Feb 15 16:13:17 2002
+++ ttyrec-1.0.5/ttytime.c	Mon Aug 19 17:56:35 2002
@@ -34,10 +34,27 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <assert.h>
+#include <unistd.h>
+#include <string.h>
 
 #include "io.h"
 #include "ttyrec.h"
 
+char * 
+format_time (char *result, const int time){
+    int sec, min, hour;
+    int t = time;
+
+    sec  = t % 60;
+    t    = t / 60;
+    min  = t % 60;
+    hour = t / 60;
+
+    sprintf(result, "%02d:%02d.%02d", hour, min, sec);
+
+    return result;
+}
+
 int
 calc_time (const char *filename)
 {
@@ -61,9 +78,31 @@
 main (int argc, char **argv)
 {
     int i;
-    for (i = 1; i < argc; i++) {
-	char *filename = argv[i];
-	printf("%7d	%s\n", calc_time(filename), filename);
+    int format_print = 0;
+    char result[255];
+
+    while(1){
+        int ch = getopt(argc, argv, "f");
+        if(ch == EOF){
+            break;
+        }
+	if(ch == 'f'){
+            format_print = 1;
+	}
+    }
+
+    if(optind < argc){
+        for (i = optind; i < argc; i++) {
+            char *filename = argv[i];
+            if(format_print == 1){
+	        printf("%7s\t%s\n",
+		       format_time(result, calc_time(filename)),
+		       filename);
+            }
+            else{
+                printf("%7d\t%s\n", calc_time(filename), filename);
+            }
+	}
     }
     return 0;
 }