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diff --git a/time/date.1 b/time/date.1 new file mode 100644 index 000000000..e3bff1b0d --- /dev/null +++ b/time/date.1 @@ -0,0 +1,153 @@ +.TH DATE 1 +.SH NAME +date \- show and set date and time +.SH SYNOPSIS +.if n .nh +.if n .na +.B date +[ +.B \-u +] [ +.B \-c +] [ +.B \-n +] [ +.B \-d +dsttype +] [ +.B \-t +minutes-west +] [ +\fB\-a \fR[\fB+\fR|\fB-]\fIsss\fB.\fIfff\fR +] [ +.BI + format +] [ +\fR[\fIyyyy\fR]\fImmddhhmm\fR[\fIyy\fR][\fB.\fIss\fR] +] +.SH DESCRIPTION +.I Date +without arguments writes the date and time to the standard output in +the form +.ce 1 +Wed Mar 8 14:54:40 EST 1989 +.br +with +.B EST +replaced by the local time zone's abbreviation +(or by the abbreviation for the time zone specified in the +.B TZ +environment variable if set). +.PP +If a command-line argument starts with a plus sign +.RB (` + '), +the rest of the argument is used as a +.I format +that controls what appears in the output. +In the format, when a percent sign +.RB (` % ') +appears, +it and the character after it are not output, +but rather identify part of the date or time +to be output in a particular way +(or identify a special character to output): +.nf +.if t .in +.5i +.if n .in +2 +.ta \w'%M\0\0'u +\w'Wed Mar 8 14:54:40 1989\0\0'u + Sample output Explanation +%a Wed Abbreviated weekday name +%A Wednesday Full weekday name +%b Mar Abbreviated month name +%B March Full month name +%c 03/08/89 14:54:40 Month/day/year Hour:minute:second +%C Wed Mar 8 14:54:40 1989 a la \fIasctime\^\fP(3) +%d 08 Day of month (always two digits) +%D 03/08/89 Month/day/year (eight characters) +%e 8 Day of month (leading zero blanked) +%h Mar Abbreviated month name +%H 14 24-hour-clock hour (two digits) +%I 02 12-hour-clock hour (two digits) +%j 067 Julian day number (three digits) +%k 2 12-hour-clock hour (leading zero blanked) +%l 14 24-hour-clock hour (leading zero blanked) +%m 03 Month number (two digits) +%M 54 Minute (two digits) +%n \\n newline character +%p PM AM/PM designation +%r 02:54:40 PM Hour:minute:second AM/PM designation +%R 14:54 Hour:minute +%S 40 Second (two digits) +%t \\t tab character +%T 14:54:40 Hour:minute:second +%U 10 Sunday-based week number (two digits) +%w 3 Day number (one digit, Sunday is 0) +%W 10 Monday-based week number (two digits) +%x 03/08/89 Month/day/year (eight characters) +%X 14:54:40 Hour:minute:second +%y 89 Last two digits of year +%Y 1989 Year in full +%Z EST Time zone abbreviation +.if t .in -.5i +.if n .in -2 +.fi +If a character other than one of those shown above appears after +a percent sign in the format, +that following character is output. +All other characters in the format are copied unchanged to the output; +a newline character is always added at the end of the output. +.PP +In Sunday-based week numbering, +the first Sunday of the year begins week 1; +days preceding it are part of ``week 0.'' +In Monday-based week numbering, +the first Monday of the year begins week 1. +.PP +To set the date, use a command line argument with one of the following forms: +.nf +.if t .in +.5i +.if n .in +2 +.ta \w'198903081454\0'u +1454 24-hour-clock hours (first two digits) and minutes +081454 Month day (first two digits), hours, and minutes +03081454 Month (two digits, January is 01), month day, hours, minutes +8903081454 Year, month, month day, hours, minutes +0308145489 Month, month day, hours, minutes, year + (on System V-compatible systems) +030814541989 Month, month day, hours, minutes, four-digit year +198903081454 Four-digit year, month, month day, hours, minutes +.if t .in -.5i +.if n .in -2 +.fi +If the century, year, month, or month day is not given, +the current value is used. +Any of the above forms may be followed by a period and two digits that give +the seconds part of the new time; if no seconds are given, zero is assumed. +.PP +These options are available: +.TP +.BR \-u " or " \-c +Use GMT when setting and showing the date and time. +.TP +.B \-n +Do not notify other networked systems of the time change. +.TP +.BI "\-d " dsttype +Set the kernel-stored Daylight Saving Time type to the given value. +(The kernel-stored DST type is used mostly by ``old'' binaries.) +.TP +.BI "\-t " minutes-west +Set the kernel-stored ``minutes west of GMT'' value to the one given on the +command line. +(The kernel-stored DST type is used mostly by ``old'' binaries.) +.TP +.BI "\-a " adjustment +Change the time forward (or backward) by the number of seconds +(and fractions thereof) specified in the +.I adjustment\^ +argument. +Either the seconds part or the fractions part of the argument (but not both) +may be omitted. +On BSD-based systems, +the adjustment is made by changing the rate at which time advances; +on System-V-based systems, the adjustment is made by changing the time. +.\" @(#)date.1 7.2 |