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(Options for date): Document --iso-8601

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Jim Meyering 1999-04-08 13:44:19 +00:00
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doc/sh-utils.texi
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@ -2390,6 +2390,32 @@ input. This is useful when you have many dates to process, because the
system overhead of starting up the @code{date} executable many times can
be considerable.
@item -I[@var{timespec}]
@itemx --iso-8601[=@var{timespec}]
@opindex -I[@var{timespec}]
@opindex --iso-8601[=@var{timespec}]
Display the date using the ISO 8601 format, @samp{%Y-%m-%d}.
The optional argument @var{timespec} specifies the number of additional
terms of the time to include. It can be one of the following:
@table @samp
@item auto
The default behavior: print just the date.
@item hours
Append the hour of the day to the date.
@item minutes
Append the hours and minutes.
@item seconds
Append the hours, minutes, and seconds.
@end table
If showing any time terms, then include the time zone using the format
@samp{%z}. If @samp{--utc} is also specified, use @samp{%Z} in place of
@samp{%z}.
@item -R
@itemx --rfc-822
@opindex -R