DragonFly On-Line Manual Pages

ZDUMP(8)	       DragonFly System Manager's Manual	      ZDUMP(8)

NAME
     zdump -- timezone dumper

SYNOPSIS
     zdump [-v] [-c [loyear,]hiyear] [zonename ...]

DESCRIPTION
     The zdump utility prints the current time in each zonename named on the
     command line.

     The following options are available:

     -v      For each zonename on the command line, print the time at the low-
	     est possible time value, the time one day after the lowest possi-
	     ble time value, the times both one second before and exactly at
	     each detected time discontinuity, the time at one day less than
	     the highest possible time value, and the time at the highest pos-
	     sible time value, Each line ends with isdst=1 if the given time
	     is Daylight Saving Time or isdst=0 otherwise.

     -c [loyear,]hiyear
	     Cut off verbose output near the start of the given year(s).  By
	     default, the program cuts off verbose output near the starts of
	     the years -500 and 2500.

LIMITATIONS
     The -v option may not be used on systems with floating-point time_t val-
     ues that are neither float nor double.

     Time discontinuities are found by sampling the results returned by
     localtime(3) at twelve-hour intervals.  This works in all real-world
     cases; one can construct artificial time zones for which this fails.

SEE ALSO
     ctime(3), tzfile(5), zic(8)

DragonFly 3.5		       October 19, 2008 		 DragonFly 3.5