Display the current time in the given FORMAT, or set the system date.
Tag | Description |
-d, --date=STRING
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display time described by STRING, not now
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-f, --file=DATEFILE
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like --date once for each line of DATEFILE
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-r, --reference=FILE
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display the last modification time of FILE
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-R, --rfc-2822
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output date and time in RFC 2822 format
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--rfc-3339=TIMESPEC
|
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output date and time in RFC 3339 format.
TIMESPEC=date, seconds, or ns for
date and time to the indicated precision.
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-s, --set=STRING
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set time described by STRING
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-u, --utc, --universal
|
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print or set Coordinated Universal Time
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--help
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display this help and exit
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--version
|
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output version information and exit
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FORMAT controls the output. The only valid option for the second form
specifies Coordinated Universal Time. Interpreted sequences are:
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%%
|
a literal %
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%a
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locales abbreviated weekday name (e.g., Sun)
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%A
|
locales full weekday name (e.g., Sunday)
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%b
|
locales abbreviated month name (e.g., Jan)
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%B
|
locales full month name (e.g., January)
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%c
|
locales date and time (e.g., Thu Mar 3 23:05:25 2005)
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%C
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century; like %Y, except omit last two digits (e.g., 21)
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%d
|
day of month (e.g, 01)
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%D
|
date; same as %m/%d/%y
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%e
|
day of month, space padded; same as %_d
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%F
|
full date; same as %Y-%m-%d
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%g
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last two digits of year of ISO week number (see %G)
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%G
|
year of ISO week number (see %V); normally useful only with %V
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%h
|
same as %b
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%H
|
hour (00..23)
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%I
|
hour (01..12)
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%j
|
day of year (001..366)
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%k
|
hour ( 0..23)
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%l
|
hour ( 1..12)
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%m
|
month (01..12)
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%M
|
minute (00..59)
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%n
|
a newline
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%N
|
nanoseconds (000000000..999999999)
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%p
|
locales equivalent of either AM or PM; blank if not known
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%P
|
like %p, but lower case
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%r
|
locales 12-hour clock time (e.g., 11:11:04 PM)
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%R
|
24-hour hour and minute; same as %H:%M
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%s
|
seconds since 1970-01-01 00:00:00 UTC
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%S
|
second (00..60)
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%t
|
a tab
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%T
|
time; same as %H:%M:%S
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%u
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day of week (1..7); 1 is Monday
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%U
|
week number of year, with Sunday as first day of week (00..53)
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%V
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ISO week number, with Monday as first day of week (01..53)
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%w
|
day of week (0..6); 0 is Sunday
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%W
|
week number of year, with Monday as first day of week (00..53)
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%x
|
locales date representation (e.g., 12/31/99)
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%X
|
locales time representation (e.g., 23:13:48)
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%y
|
last two digits of year (00..99)
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%Y
|
year
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%z
|
+hhmm numeric timezone (e.g., -0400)
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%:z
|
+hh:mm numeric timezone (e.g., -04:00)
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%::z
|
+hh:mm:ss numeric time zone (e.g., -04:00:00)
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%:::z
|
numeric time zone with : to necessary precision (e.g., -04, +05:30)
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%Z
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alphabetic time zone abbreviation (e.g., EDT)
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By default, date pads numeric fields with zeroes.
The following optional flags may follow %:
|
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- (hyphen) do not pad the field
_ (underscore) pad with spaces
0 (zero) pad with zeros
^ use upper case if possible
# use opposite case if possible
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After any flags comes an optional field width, as a decimal number;
then an optional modifier, which is either
E to use the locales alternate representations if available, or
O to use the locales alternate numeric symbols if available.