On 11/30/20 2:13 PM, 積丹尼 Dan Jacobson wrote:
> $ date -I=seconds
> date: invalid argument ‘=seconds’ for ‘--iso-8601’
Hmm, first of all, 'date' 8.32 outputs more than the above:
$ date -I=seconds
date: invalid argument '=seconds' for '--iso-8601'
Valid arguments are:
- 'hours'
- 'minutes'
- 'date'
- 'seconds'
- 'ns'
Try 'date --help' for more information.
> Hey, that is a valid argument for --iso-8601. (But not for -I, so say
> that instead.)
...
> date (GNU coreutils) 8.32
>From the above error message and from the --help output, one can see that
the -I option does not require the argument to be appended with "=FMT" but
just "FMT":
$ date --help | grep -- -I
-I[FMT], --iso-8601[=FMT] output date/time in ISO 8601 format.
So, I'd say 'date' works as expected:
$ date -Iseconds
2020-11-30T14:38:35+01:00
Have a nice day,
Berny
