1. Computing
Linux / Unix Command: date
Command Library

NAME

date - print or set the system date and time

SYNOPSIS

date [OPTION]... [+FORMAT]
date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]

DESCRIPTION

Display the current time in the given FORMAT, or set the system date.

-d, --date=STRING
display time described by STRING, not `now'
-f, --file=DATEFILE
like --date once for each line of DATEFILE
-ITIMESPEC, --iso-8601[=TIMESPEC]
output date/time in ISO 8601 format. TIMESPEC=`date' for date only, `hours', `minutes', or `seconds' for date and time to the indicated precision. --iso-8601 without TIMESPEC defaults to `date'.
-r, --reference=FILE
display the last modification time of FILE
-R, --rfc-822
output RFC-822 compliant date string
-s, --set=STRING
set time described by STRING
-u, --utc, --universal
print or set Coordinated Universal Time
--help
display this help and exit
--version
output version information and exit

FORMAT controls the output. The only valid option for the second form specifies Coordinated Universal Time. Interpreted sequences are:

%%
a literal %
%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)
%C
century (year divided by 100 and truncated to an integer) [00-99]
%d
day of month (01..31)
%D
date (mm/dd/yy)
%e
day of month, blank padded ( 1..31)
%F
same as %Y-%m-%d
%g
the 2-digit year corresponding to the %V week number
%G
the 4-digit year corresponding to the %V week number
%h
same as %b
%H
hour (00..23)
%I
hour (01..12)
%j
day of year (001..366)
%k
hour ( 0..23)
%l
hour ( 1..12)
%m
month (01..12)
%M
minute (00..59)
%n
a newline
%N
nanoseconds (000000000..999999999)
%p
locale's upper case AM or PM indicator (blank in many locales)
%P
locale's lower case am or pm indicator (blank in many locales)
%r
time, 12-hour (hh:mm:ss [AP]M)
%R
time, 24-hour (hh:mm)
%s
seconds since `00:00:00 1970-01-01 UTC' (a GNU extension)
%S
second (00..60); the 60 is necessary to accommodate a leap second
%t
a horizontal tab
%T
time, 24-hour (hh:mm:ss)
%u
day of week (1..7); 1 represents Monday
%U
week number of year with Sunday as first day of week (00..53)
%V
week number of year with Monday as first day of week (01..53)
%w
day of week (0..6); 0 represents Sunday
%W
week number of year with Monday as first day of week (00..53)
%x
locale's date representation (mm/dd/yy)
%X
locale's time representation (%H:%M:%S)
%y
last two digits of year (00..99)
%Y
year (1970...)
%z
RFC-822 style numeric timezone (-0500) (a nonstandard extension)
%Z
time zone (e.g., EDT), or nothing if no time zone is determinable

By default, date pads numeric fields with zeroes. GNU date recognizes the following modifiers between `%' and a numeric directive.

`-' (hyphen) do not pad the field `_' (underscore) pad the field with spaces

SEE ALSO

The full documentation for date is maintained as a Texinfo manual. If the info and date programs are properly installed at your site, the command
info date

should give you access to the complete manual.


Important: Use the man command (% man) to see how a command is used on your particular computer.

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