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date: Print or set system date and timeSynopses:
date [option]… [+format] date [-u|--utc|--universal] [ MMDDhhmm[[CC]YY][.ss] ]
The date command displays the date and time.
With the --set (-s) option, or with
‘MMDDhhmm[[CC]YY][.ss]’,
it sets the date and time.
Invoking date with no format argument is equivalent to invoking
it with a default format that depends on the LC_TIME locale category.
In the default C locale, this format is ‘'+%a %b %e %H:%M:%S %Z %Y'’,
so the output looks like ‘Thu Jul 9 17:00:00 EDT 2020’.
Normally, date uses the time zone rules indicated by the
TZ environment variable, or the system default rules if TZ
is not set. See Specifying the Time Zone with
TZ in The GNU C Library Reference Manual.
If given an argument that starts with a ‘+’, date prints the
current date and time (or the date and time specified by the
--date option, see below) in the format defined by that argument,
which is similar to that of the strftime function. Except for
conversion specifiers, which start with ‘%’, characters in the
format string are printed unchanged. The conversion specifiers are
described below.
An exit status of zero indicates success, and a nonzero value indicates failure.
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