Re: Calculating difference between dates
> does anybody know how it would be possible to calculate the difference
> between two dates with a shell or awk script, for example from 15:30:23
> to 17:29:01?
Those aren't dates. Those are times, but the following should work either
try: date -d "15:30:23" +"%s"
This will give you the number of seconds from 1970 until the time you
specify until today. So you can do something like:
sooner=`date -d "15:30:23" +"%s"`
later=`date -d "17:29:01" +"%s"`
seconds=`expr "$later" - "$sooner"`
and $seconds should contain the difference, in seconds.
BTW, this is all in plain 'ol shell script.