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DATE(1L) DATE(1L)
NNAAMMEE
date - print or set the system date and time
SSYYNNOOPPSSIISS
ddaattee [-u] [-d datestr] [-s datestr] [+FORMAT] [MMD-
Dhhmm[[CC]YY][.ss]]
DDEESSCCRRIIPPTTIIOONN
This manual page documents the GNU version of ddaattee. ddaattee
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)
1
DATE(1L) DATE(1L)
%A locale's full weekday name, variable length (Sun-
day..Saturday)
%b locale's abbreviated month name (Jan..Dec)
%B locale's full month name, variable length (Jan-
uary..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 `+', ddaattee
sets the system clock to the time and date specified by
that argument. The argument must consist entirely of dig-
its, 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)
2
DATE(1L) DATE(1L)
Only the superuser can set the system clock.
OOPPTTIIOONNSS
_-_d _d_a_t_e_s_t_r
Display the time and date specified in _d_a_t_e_s_t_r,
which can be in almost any common format. The dis-
play is in the default output format, or if an
argument starting with `+' is given to ddaattee, in the
format specified by that argument.
_-_s _d_a_t_e_s_t_r
Set the time and date to _d_a_t_e_s_t_r, 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 Coordi-
nated Time (also known as Greenwich Mean Time)
instead of in local (wall clock) time.
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