DATE
Section: Misc. Reference Manual Pages (1L)
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NAME
date - print or set the system date and time
SYNOPSIS
date
[-u] [-d datestr] [-s datestr] [+FORMAT] [MMDDhhmm[[CC]YY][.ss]]
DESCRIPTION
This manual page
documents the GNU version of
date.
date
with no arguments prints the current time and date (in the format
of the `%c' directive described below).
If given an argument that starts with a `+', it prints the current
time and date in a format controlled by that argument, which has the
same format as the format string passed to the `strftime' function.
Except for directives that start with `%', characters in that string
are printed unchanged.
The directives are:
- %
-
a literal %
- n
-
a newline
- t
-
a horizontal tab
Time fields:
- %H
-
hour (00..23)
- %I
-
hour (01..12)
- %k
-
hour ( 0..23)
- %l
-
hour ( 1..12)
- %M
-
minute (00..59)
- %p
-
locale's AM or PM
- %r
-
time, 12-hour (hh:mm:ss [AP]M)
- %S
-
second (00..61)
- %T
-
time, 24-hour (hh:mm:ss)
- %X
-
locale's time representation (%H:%M:%S)
- %Z
-
time zone (e.g., EDT), or nothing if no time zone is determinable
Date fields:
- %a
-
locale's abbreviated weekday name (Sun..Sat)
- %A
-
locale's full weekday name, variable length (Sunday..Saturday)
- %b
-
locale's abbreviated month name (Jan..Dec)
- %B
-
locale's full month name, variable length (January..December)
- %c
-
locale's date and time (Sat Nov 04 12:02:33 EST 1989)
- %d
-
day of month (01..31)
- %D
-
date (mm/dd/yy)
- %h
-
same as %b
- %j
-
day of year (001..366)
- %m
-
month (01..12)
- %U
-
week number of year with Sunday as first day of week (00..53)
- %w
-
day of week (0..6)
- %W
-
week number of year with Monday as first day of week (00..53)
- %x
-
locale's date representation (mm/dd/yy)
- %y
-
last two digits of year (00..99)
- %Y
-
year (1970...)
If given an argument that does not start with `+',
date
sets the system clock to the time and date specified by that argument.
The argument must consist entirely of digits, which have the following
meaning:
- MM
-
month
- DD
-
day within month
- hh
-
hour
- mm
-
minute
- CC
-
first two digits of year (optional)
- YY
-
last two digits of year (optional)
- ss
-
second (optional)
Only the superuser can set the system clock.
OPTIONS
- -d datestr
-
Display the time and date specified in
datestr,
which can be in almost any common format. The display is in
the default output format, or if an argument starting with `+' is
given to
date,
in the format specified by that argument.
- -s datestr
-
Set the time and date to
datestr,
which can be in almost any common format.
It can contain month names, timezones, `am' and `pm', etc.
- -u
-
Print or set the time and date in Universal Coordinated Time (also
known as Greenwich Mean Time) instead of in local (wall clock) time.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
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Time: 17:13:02 GMT, January 16, 2023