Re: Is there a POSIX compliant way of turning a "HH:MM:SS" formatted string to seconds? ...
On Fri, Jul 18, 2025 at 12:27:04AM +0200, lbrtchx@tutamail.com wrote:
> _HHMMSS="19:09" means 19*60 + 9 = 1149 seconds
> _HHMMSS="19:08" means 19*60 + 8 = 1148 seconds
So: 19:09 is 19 minutes and 9 seconds ?
It is not HHMMSS for that you should have _HHMMSS="00:19:09"
I found a bug in my solution --- time zone problems, so setting to GMT is needed:
_HHMMSS="19:09:00"
seconds=$( TZ=GMT date --date="1 january 1970 $_HHMMSS" "+%s" )
echo seconds=$seconds
seconds=68940
_HHMMSS="00:19:09"
seconds=$( TZ=GMT date --date="1 january 1970 $_HHMMSS" "+%s" )
echo seconds=$seconds
seconds=1149
> so, it seems date is also somehow parsing that value as octal even though it is being formatted in a date friendly way. is there a way to exactly specify the encoding of the input for date?
--
Alain Williams
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