ZDUMP(8) Maintenance Commands and Procedures ZDUMP(8)

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(7) for descriptions of the following attributes:


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

SEE ALSO

ctime(3C), mktime(3C), attributes(7), environ(7), zic(8)

January 3, 2006 ZDUMP(8)