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Certain commands require arguments that specify a date or time. Date
and time arguments can be either relative or absolute.
A relative argument specifies a certain length of time from the
current date or time. The format of a relative argument is:
number-of-days is optional.
D is required if you specify number of days.
hours is optional if you specify number of days with
the letter D. Otherwise, hours is required.
minutes is optional.
seconds is optional. However, if you specify seconds,
minutes must also be given or seconds will be
interpreted as minutes.
You must type a colon to separate one field from the other. You can
precede a relative argument with an optional plus (+) or minus (-)
sign. The sign implies either past (-) or future (+). When you do
not specify number of days, you must precede the time with a plus sign
or a minus sign. For example:
means 3 days, 4 hours, 27 minutes, and 21 seconds ago. Similarly:
means 4 hours from now.
An absolute argument specifies a particular date or time. The format
of an absolute argument is one of the following:
Where: weekday is the day of the week or one of the following:
YESTERDAY, TODAY, TOMORROW.
This part of the argument is optional. The weekdays are
abbreviated as follows:
SUNDAY = SUN
MONDAY = MON
TUESDAY = TUES
WEDNESDAY = WED
THURSDAY = THUR
FRIDAY = FRI
SATURDAY = SAT
date is optional and has one of the following formats:
numeric month-day-year (10-21-79)
The month can be abbreviated. The abbreviations for
the months are JA, F, MAR, AP, MAY, JUN, JUL, AU, S, O,
N, and D.
The year and its preceding hyphen are optional, and, if
given, can be one, two, or four digits. For example,
0, 90, and 1990 will all be interpreted as the year
keyword is one of the following options:
LOGIN (time of login)
hours is based on a 24-hour clock (0 through 23) and is
required if you omitted the weekday, date, or keyword, or if
you specify minutes.
minutes is optional unless you specify seconds.
seconds is optional.
The following example specifies Wednesday at 9:15:06 AM.
Because the date is known to be past or future from either the switch
used (/BEFORE and /SINCE imply past, /AFTER implies the future) or by
a plus or minus sign, an unspecified field is filled in so that the
result is the next or last occurrence of the specified date. If you
omit the time argument, the time defaults to 00:00:00 (midnight) if
past, and 23:59:59 (11 o'clock, 59 minutes, and 59 second PM) if
/AFTER:SAT is after 23:59:59 next Saturday
/BEFORE:25-FEB is before last February 25th
/SINCE:JUL-3-85 is since July 3, 1985 at midnight