ZDUMP(1M) Maintenance Commands ZDUMP(1M)


NAME


zdump - time zone dumper

SYNOPSIS


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


DESCRIPTION


The zdump command prints the current time for each time zone (zonename)
listed on the command line. Specify zonename as the name of the time zone
database file relative to /usr/share/lib/zoneinfo.


Specifying an invalid time zone (zonename) to zdump does not return an
error, rather zdump uses GMTO. This is consistent with the behavior of
the library calls; zdump reflects the same behavior of the time routines
in libc. See ctime(3C) and mktime(3C).

OPTIONS


The following options are supported:

--version
Outputs version information and exits.


-v
Displays the entire contents of the time zone
database file for zonename. Prints the time at the
lowest possible time value; the time one day after
the lowest possible time value; the times both one
second before and exactly at each time at which the
rules for computing local time change; the time at
the highest possible time value; and the time at
one day less than the highest possible time value.
See mktime(3C) and ctime(3C) for information
regarding time value (time_t). Each line of output
ends with isdst=1 if the given time is Daylight
Saving Time, or isdst=0 otherwise.


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


EXIT STATUS


The following exit values are returned:

0
Successful completion.


1
An error occurred.


FILES


/usr/share/lib/zoneinfo
Standard zone information directory


ATTRIBUTES


See attributes(5) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Stable |
+--------------------+-----------------+

SEE ALSO


zic(1M), ctime(3C), mktime(3C), attributes(5), environ(5)


January 3, 2006 ZDUMP(1M)