DATE man page on SmartOS

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DATE(1)								       DATE(1)

       date - write the date and time

       /usr/bin/date [-u] [-R] [+format]

       /usr/bin/date [-a [-]sss.fff]

       /usr/bin/date [-u] [ [mmdd] HHMM | mmddHHMM [cc] yy] [.SS]

       /usr/xpg4/bin/date [-u] [-R] [+format]

       /usr/xpg4/bin/date [-a [-]sss.fff]

       /usr/xpg4/bin/date [-u]
	    [ [mmdd] HHMM | mmddHHMM [cc] yy] [.SS]

       The  date  utility  writes  the	date  and  time	 to standard output or
       attempts to set the system date and time. By default, the current  date
       and time is written.

       Specifications  of  native  language  translations of month and weekday
       names are supported. The month and weekday names used  for  a  language
       are  based on the locale specified by the environment variable LC_TIME.
       See environ(5).

       The following is the default form for the "C" locale:

	 %a %b %e %T %Z %Y

       For example,

	 Fri Dec 23 10:10:42 EST 1988

       The following options are supported:

       -a [-]sss.fff
			       Slowly adjust the time by sss.fff seconds  (fff
			       represents fractions of a second). This adjust‐
			       ment can be positive or negative. The  system's
			       clock  is  sped	up or slowed down until it has
			       drifted by the  number  of  seconds  specified.
			       Only the super-user may adjust the time.

			       Display	(or  set)  the	date in Greenwich Mean
			       Time (GMT—universal time), bypassing the normal
			       conversion to (or from) local time.

			       Change  the  default  format to the format used
			       for mail message headers (similar  to  RFC  822
			       format).	 The default format becomes

				 %a, %d %h %Y %H:%M:%S %z

       The following operands are supported:

		   If  the  argument  begins with +, the output of date is the
		   result of passing format and	 the  current  time  to	 strf‐
		   time().  date  uses the conversion specifications listed on
		   the strftime(3C) manual page, with the conversion  specifi‐
		   cation  for	%C  determined	by  whether  /usr/bin/date  or
		   /usr/xpg4/bin/date is used:

					  Locale's date and  time  representa‐
					  tion. This is the default output for

					  Century (a year divided by  100  and
					  truncated  to an integer) as a deci‐
					  mal number [00-99].

		   In addition, the nonstandard conversion specification %N is
		   also	 supported, and is converted to the zero-padded number
		   of nanoseconds since the last second.  Note that the actual
		   resolution  of  this number is limited to the resolution of
		   the system's CLOCK_REALTIME clock.  See clock_gettime(3C).

		   The string is always terminated with a NEWLINE. An argument
		   containing blanks must be quoted; see the EXAMPLES section.

		   Month number

		   Day number in the month

		   Hour number (24 hour system)

		   Minute number

		   Second number

		   Century (a year divided by 100 and truncated to an integer)
		   as a decimal number [00-99]. For example, cc is 19 for  the
		   year 1988 and 20 for the year 2007.

		   Last	 two digits of the year number. If century (cc) is not
		   specified, then values in the range 69-99  shall  refer  to
		   years 1969 to 1999 inclusive, and values in the range 00-68
		   shall refer to years 2000 to 2068, inclusive.

       The month, day, year number, and century may be	omitted;  the  current
       values are applied as defaults. For example, the following entry:

	 example% date 10080045

       sets  the  date	to  Oct	 8, 12:45 a.m. The current year is the default
       because no year is supplied. The system operates	 in  GMT.  date	 takes
       care  of	 the  conversion to and from local standard and daylight time.
       Only the super-user may change the date. After successfully setting the
       date and time, date displays the new date according to the default for‐
       mat. The date command uses TZ to determine the correct time zone infor‐
       mation; see environ(5).

       Example 1 Generating Output

       The following command:

	 example% date '+DATE: %m/%d/%y%nTIME:%H:%M:%S'

       generates as output

	 DATE: 08/01/76

	 TIME: 14:45:05

       Example 2 Setting the Current Time

       The following command sets the current time to 12:34:56:

	 example# date 1234.56

       Example 3 Setting Another Time and Date in Greenwich Mean Time

       The following command sets the date to January 1st, 12:30 am, 2000:

	 example# date -u 010100302000

       This is displayed as:

	 Thu Jan 01 00:30:00 GMT 2000

       See  environ(5) for descriptions of the following environment variables
       that affect the execution of date:  LANG,  LC_ALL,  LC_CTYPE,  LC_TIME,

	      Determine	 the  timezone in which the time and date are written,
	      unless the -u option is specified. If the TZ variable is not set
	      and  the	-u  is	not  specified, the system default timezone is

       The following exit values are returned:

	      Successful completion.

	      An error occurred.

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

       │CSI	       │ enabled	 │

       │CSI		    │ enabled	      │
       │Interface Stability │ Standard	      │

       strftime(3C), attributes(5), environ(5), standards(5)

       no permission
			  You are not the super-user and you tried  to	change
			  the date.

       bad conversion
			  The date set is syntactically incorrect.

       If  you	attempt	 to  set the current date to one of the dates that the
       standard and alternate time zones change (for example,  the  date  that
       daylight	 time  is starting or ending), and you attempt to set the time
       to a time in the interval between the end  of  standard	time  and  the
       beginning  of  the alternate time (or the end of the alternate time and
       the beginning of standard time), the results are unpredictable.

       Using the date command from within windowing environments to change the
       date  can  lead	to unpredictable results and is unsafe. It can also be
       unsafe in the multi-user mode, that is, outside of a windowing  system,
       if  the	date is changed rapidly back and forth. The recommended method
       of changing the date is 'date -a'.

       Setting the system time or allowing the system time to progress	beyond
       03:14:07 UTC Jan 19, 2038 is not supported on Solaris.

				  May 1, 2011			       DATE(1)

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