difference of time

[handle1programmer]

Hi,

I have 2 dates : d1 and d2 which display time also
in the format Wed 20 Jun 2002 10:10:10 . How can i get
the difference of these 2 date-times using shell
scripting.

Thanks

 

[grega]

I would have said you can't, or at least it's not worth the effort. However, someone must have done it before ... there's a bash script here which purports to do what you want ... have a look

http://www.tldp.org/LDP/abs/html/contributed-scripts.html

Greg.

 

[newmangj]

Does this have to be done in bash script? If not you could use a Perl script using the Fate::Calc module. This will allow date arithmetic using dates in all kinds of wierd formats.

use Date::Calc qw(Delta_DHMS);
@date1 = (1992, 3, 24, 10, 10, 0);
@date2 = (2002, 5, 23, 12, 4, 0);
@diff = Delta_DHMS(@date2, @date1);
printf "Difference is $diff[0] days, $diff[1]:$diff[2]:$diff[3]\n";

or some variation on that.