--- zdump.8.orig	29 Oct 2003 20:43:27 -0000	1.5
+++ zdump.8	12 Mar 2007 13:02:35 -0000
@@ -10,6 +10,7 @@
 .Nm zdump
 .Op Fl \-version
 .Op Fl v
+.Op Fl s Ar startyear
 .Op Fl c Ar cutoffyear
 .Op Ar zonename ...
 .Sh DESCRIPTION
@@ -39,6 +40,8 @@ if the given time is Daylight Saving Tim
 otherwise.
 .It Fl c Ar cutoffyear
 Cut off the verbose output near the start of the given year.
+.It Fl s Ar startyear
+Begin the verbose output after the start of the given year.
 .El
 .Sh SEE ALSO
 .Xr ctime 3 ,





--- zdump.c.orig	4 Dec 2006 17:24:40 -0000	1.16
+++ zdump.c	12 Mar 2007 13:02:35 -0000
@@ -146,6 +146,9 @@ char *	argv[];
 	register char *		cutoff;
 	register int		cutyear;
 	register long		cuttime;
+	register char *		beginning;
+	register int		beginyear;
+	register long		begintime;
 	char **			fakeenv;
 	time_t			now;
 	time_t			t;
@@ -170,9 +173,12 @@ char *	argv[];
 		}
 	vflag = 0;
 	cutoff = NULL;
-	while ((c = getopt(argc, argv, "c:v")) == 'c' || c == 'v')
+	beginning = NULL;
+	while ((c = getopt(argc, argv, "s:c:v")) == 'c' || c == 's' || c == 'v')
 		if (c == 'v')
 			vflag = 1;
+		else if (c == 's')
+			beginning = optarg;
 		else	cutoff = optarg;
 	if ((c != EOF && c != -1) ||
 		(optind == argc - 1 && strcmp(argv[optind], "=") == 0)) {
@@ -190,6 +196,15 @@ _("%s: usage is %s [ --version ] [ -v ] 
 			cuttime += DAYSPERNYEAR + isleap(y);
 		cuttime *= SECSPERHOUR * HOURSPERDAY;
 	}
+	if ( beginning != NULL) {
+		int	y;
+
+		beginyear = atoi(beginning);
+		begintime = 0;
+		for (y = EPOCH_YEAR; y < beginyear; ++y)
+			begintime += DAYSPERNYEAR + isleap(y);
+		begintime *= SECSPERHOUR * HOURSPERDAY;
+	}
 	(void) time(&now);
 	longest = 0;
 	for (i = optind; i < argc; ++i)
@@ -232,6 +247,8 @@ _("%s: usage is %s [ --version ] [ -v ] 
 		t = hibit;
 		if (t > 0)		/* time_t is unsigned */
 			t = 0;
+		if ( beginning != NULL)
+			t = begintime;
 		show(argv[i], t, TRUE);
 		t += SECSPERHOUR * HOURSPERDAY;
 		show(argv[i], t, TRUE);