-d, --date=STRING
display time described by STRING, not `now'
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-f, --file=DATEFILE
like --date once for each line of DATEFILE
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-r, --reference=FILE
display the last modification time of FILE
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-R, --rfc-2822
output date and time in RFC 2822 format. Example: Mon, 07 Aug 2006 12:34:56 -0600
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--rfc-3339=TIMESPEC
output date and time in RFC 3339 format. TIMESPEC=`date', `seconds', or `ns' for date and time to
the indicated precision. Date and time components are separated by a single space: 2006-08-07
12:34:56-06:00
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-s, --set=STRING
set time described by STRING
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-u, --utc, --universal
print or set Coordinated Universal Time
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--help display this help and exit
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--version
output version information and exit
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