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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | DATE STRING | AUTHOR | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
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DATE(1) User Commands DATE(1)
date - print or set the system date and time
date [OPTION]... [+FORMAT]
date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]
Display date and time in the given FORMAT. With -s, or with
[MMDDhhmm[[CC]YY][.ss]], set the date and time.
Mandatory arguments to long options are mandatory for short
options too.
-d, --date=STRING
display time described by STRING, not 'now'
--debug
annotate the parsed date, and warn about questionable
usage to stderr
-f, --file=DATEFILE
like --date; once for each line of DATEFILE
-I[FMT], --iso-8601[=FMT]
output date/time in ISO 8601 format. FMT='date' for date
only (the default), 'hours', 'minutes', 'seconds', or 'ns'
for date and time to the indicated precision. Example:
2006-08-14T02:34:56-06:00
--resolution
output the available resolution of timestamps Example:
0.000000001
-R, --rfc-email
output date and time in RFC 5322 format. Example: Mon, 14
Aug 2006 02:34:56 -0600
--rfc-3339=FMT
output date/time in RFC 3339 format. FMT='date',
'seconds', or 'ns' for date and time to the indicated
precision. Example: 2006-08-14 02:34:56-06:00
-r, --reference=FILE
display the last modification time of FILE
-s, --set=STRING
set time described by STRING
-u, --utc, --universal
print or set Coordinated Universal Time (UTC)
--help display this help and exit
--version
output version information and exit
All options that specify the date to display are mutually
exclusive. I.e.: --date, --file, --reference, --resolution.
FORMAT controls the output. Interpreted sequences are:
%% a literal %
%a locale's abbreviated weekday name (e.g., Sun)
%A locale's full weekday name (e.g., Sunday)
%b locale's abbreviated month name (e.g., Jan)
%B locale's full month name (e.g., January)
%c locale's date and time (e.g., Thu Mar 3 23:05:25 2005)
%C century; like %Y, except omit last two digits (e.g., 20)
%d day of month (e.g., 01)
%D date; same as %m/%d/%y
%e day of month, space padded; same as %_d
%F full date; like %+4Y-%m-%d
%g last two digits of year of ISO week number (see %G)
%G year of ISO week number (see %V); normally useful only
with %V
%h same as %b
%H hour (00..23)
%I hour (01..12)
%j day of year (001..366)
%k hour, space padded ( 0..23); same as %_H
%l hour, space padded ( 1..12); same as %_I
%m month (01..12)
%M minute (00..59)
%n a newline
%N nanoseconds (000000000..999999999)
%p locale's equivalent of either AM or PM; blank if not known
%P like %p, but lower case
%q quarter of year (1..4)
%r locale's 12-hour clock time (e.g., 11:11:04 PM)
%R 24-hour hour and minute; same as %H:%M
%s seconds since the Epoch (1970-01-01 00:00 UTC)
%S second (00..60)
%t a tab
%T time; same as %H:%M:%S
%u day of week (1..7); 1 is Monday
%U week number of year, with Sunday as first day of week
(00..53)
%V ISO week number, with Monday as first day of week (01..53)
%w day of week (0..6); 0 is Sunday
%W week number of year, with Monday as first day of week
(00..53)
%x locale's date representation (e.g., 12/31/99)
%X locale's time representation (e.g., 23:13:48)
%y last two digits of year (00..99)
%Y year
%z +hhmm numeric time zone (e.g., -0400)
%:z +hh:mm numeric time zone (e.g., -04:00)
%::z +hh:mm:ss numeric time zone (e.g., -04:00:00)
%:::z numeric time zone with : to necessary precision (e.g.,
-04, +05:30)
%Z alphabetic time zone abbreviation (e.g., EDT)
By default, date pads numeric fields with zeroes. The following
optional flags may follow '%':
- (hyphen) do not pad the field
_ (underscore) pad with spaces
0 (zero) pad with zeros
+ pad with zeros, and put '+' before future years with >4
digits
^ use upper case if possible
# use opposite case if possible
After any flags comes an optional field width, as a decimal
number; then an optional modifier, which is either E to use the
locale's alternate representations if available, or O to use the
locale's alternate numeric symbols if available.
Convert seconds since the Epoch (1970-01-01 UTC) to a date
$ date --date='@2147483647'
Show the time on the west coast of the US (use tzselect(1) to
find TZ)
$ TZ='America/Los_Angeles' date
Show the local time for 9AM next Friday on the west coast of the
US
$ date --date='TZ="America/Los_Angeles" 09:00 next Fri'
The --date=STRING is a mostly free format human readable date
string such as "Sun, 29 Feb 2004 16:21:42 -0800" or "2004-02-29
16:21:42" or even "next Thursday". A date string may contain
items indicating calendar date, time of day, time zone, day of
week, relative time, relative date, and numbers. An empty string
indicates the beginning of the day. The date string format is
more complex than is easily documented here but is fully
described in the info documentation.
Written by David MacKenzie.
GNU coreutils online help:
<https://www.gnu.org/software/coreutils/>
Report any translation bugs to
<https://translationproject.org/team/>
Copyright © 2024 Free Software Foundation, Inc. License GPLv3+:
GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute
it. There is NO WARRANTY, to the extent permitted by law.
Full documentation <https://www.gnu.org/software/coreutils/date>
or available locally via: info '(coreutils) date invocation'
This page is part of the coreutils (basic file, shell and text
manipulation utilities) project. Information about the project
can be found at ⟨http://www.gnu.org/software/coreutils/⟩. If you
have a bug report for this manual page, see
⟨http://www.gnu.org/software/coreutils/⟩. This page was obtained
from the tarball coreutils-9.5.tar.xz fetched from
⟨http://ftp.gnu.org/gnu/coreutils/⟩ on 2024-06-14. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to [email protected]
GNU coreutils 9.5 March 2024 DATE(1)
Pages that refer to this page: cronnext(1), dir(1), gawk(1), locale(1), ls(1), pmdashping(1), pmdate(1), timedatectl(1), vdir(1), clock_getres(2), gettimeofday(2), stime(2), time(2), ctime(3), difftime(3), posix_spawn(3), strftime(3), tzset(3), rtc(4), crontab(5), locale(5), utmp(5), lvmreport(7), time(7), hwclock(8), rtcwake(8)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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