How to get time duration between two human readable time stamp in Unix?

ford99 · July 18, 2011, 5:40pm

Here is two time I have:

Jul 12 16:02:01
Jul 13 01:02:01

and how can I do a simple match to get difference between two time which is 09:00:00

Thanks in advance.

jlliagre · July 18, 2011, 7:18pm

Assuming you have GNU date available:

$ s=$(( $(date -d "Jul 13 01:02:01" +%s) - $(date -d "Jul 12 16:02:01" +%s) ))
$ printf "%02d:%02d:%02d\n" $((s/3600)) $((s%3600/60)) $((s%60))
09:00:00

ford99 · July 18, 2011, 7:47pm

Awesome!!!
Thanks a lot

fpmurphy · July 19, 2011, 9:52am

Which OS are you on?