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Linux / Unix Command: date
Command Library


date - print or set the system date and time


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


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
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
display this help and exit
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 %
locale's abbreviated weekday name (Sun..Sat)
locale's full weekday name, variable length (Sunday..Saturday)
locale's abbreviated month name (Jan..Dec)
locale's full month name, variable length (January..December)
locale's date and time (Sat Nov 04 12:02:33 EST 1989)
century (year divided by 100 and truncated to an integer) [00-99]
day of month (01..31)
date (mm/dd/yy)
day of month, blank padded ( 1..31)
same as %Y-%m-%d
the 2-digit year corresponding to the %V week number
the 4-digit year corresponding to the %V week number
same as %b
hour (00..23)
hour (01..12)
day of year (001..366)
hour ( 0..23)
hour ( 1..12)
month (01..12)
minute (00..59)
a newline
nanoseconds (000000000..999999999)
locale's upper case AM or PM indicator (blank in many locales)
locale's lower case am or pm indicator (blank in many locales)
time, 12-hour (hh:mm:ss [AP]M)
time, 24-hour (hh:mm)
seconds since `00:00:00 1970-01-01 UTC' (a GNU extension)
second (00..60); the 60 is necessary to accommodate a leap second
a horizontal tab
time, 24-hour (hh:mm:ss)
day of week (1..7); 1 represents Monday
week number of year with Sunday as first day of week (00..53)
week number of year with Monday as first day of week (01..53)
day of week (0..6); 0 represents Sunday
week number of year with Monday as first day of week (00..53)
locale's date representation (mm/dd/yy)
locale's time representation (%H:%M:%S)
last two digits of year (00..99)
year (1970...)
RFC-822 style numeric timezone (-0500) (a nonstandard extension)
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


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.

>> Linux/Unix Command Library

>> Shell Command Library

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