diff options
Diffstat (limited to 'contrib/tzcode/date.1')
| -rw-r--r-- | contrib/tzcode/date.1 | 122 |
1 files changed, 21 insertions, 101 deletions
diff --git a/contrib/tzcode/date.1 b/contrib/tzcode/date.1 index 01907bc76e2c..3a02e7c2e08a 100644 --- a/contrib/tzcode/date.1 +++ b/contrib/tzcode/date.1 @@ -6,15 +6,13 @@ date \- show and set date and time .SH SYNOPSIS .if n .nh .if n .na -.ie \n(.g .ds - \f(CR-\fP -.el .ds - \- .B date [ -.B \*-u +.B \-u ] [ -.B \*-c +.B \-c ] [ -.B \*-r +.B \-r .I seconds ] [ .BI + format @@ -35,7 +33,7 @@ command without arguments writes the date and time to the standard output in the form .ce 1 -Wed Mar 8 14:54:40 EST 1989 +Sat Mar 8 14:54:40 EST 2025 .br with .B EST @@ -49,99 +47,24 @@ If a command-line argument starts with a plus sign (\c .q "\fB+\fP" ), 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 (\c -.q "\fB%\fP" -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 -.sp -.if t .in +.5i -.if n .in +2 -.ta \w'%M\0\0'u +\w'Wed Mar 8 14:54:40 EST 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 Wed Mar 08 14:54:40 1989 Date and time* -%C 19 Century -%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 Date* -%X 14:54:40 Time* -%y 89 Last two digits of year -%Y 1989 Year in full -%z -0500 Numeric time zone -%Z EST Time zone abbreviation -%+ Wed Mar 8 14:54:40 EST 1989 Default output format* -.if t .in -.5i -.if n .in -2 -* The exact output depends on the locale. -.sp -.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 -.q "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. +that is processed by +.BR strftime (3) +to determine what to output; +a newline character is appended. +For example, the shell command: +.ce 1 +date +"%Y\-%m\-%d %H:%M:%S %z" +.br +outputs a line like +.q "2025\-03\-08 14:54:40 \-0500" +instead. .PP These options are available: .TP -.BR \*-u " or " \*-c +.BR \-u " or " \-c Use Universal Time when setting and showing the date and time. .TP -.BI "\*-r " seconds +.BI "\-r " seconds Output the date that corresponds to .I seconds past the epoch of 1970-01-01 00:00:00 UTC, where @@ -149,16 +72,13 @@ past the epoch of 1970-01-01 00:00:00 UTC, where should be an integer, either decimal, octal (leading 0), or hexadecimal (leading 0x), preceded by an optional sign. .SH FILES -.ta \w'/usr/share/zoneinfo/posixrules\0\0'u +.ta \w'/usr/share/zoneinfo/Etc/UTC\0\0'u /etc/localtime local timezone file .br /usr/lib/locale/\f2L\fP/LC_TIME description of time locale \f2L\fP .br /usr/share/zoneinfo timezone directory .br -/usr/share/zoneinfo/posixrules default DST rules (obsolete) -.br -/usr/share/zoneinfo/GMT for UTC leap seconds -.PP -If /usr/share/zoneinfo/GMT is absent, -UTC leap seconds are loaded from /usr/share/zoneinfo/GMT0 if present. +/usr/share/zoneinfo/Etc/UTC for UTC leap seconds +.SH SEE ALSO +.BR strftime (3). |