How can I calculate the time difference from for example 28/08/03 04:23:18 and 29/08/03 13:18:48. Is there any time function for this purpose?

I use this PERL module for various date/time functions. The following script uses the module linked above. Note that you have to escape the space in your date/times so each date is only one argument. I called the script like this (in BASH)- "./test.pl 28/08/03\ 04:23:18 29/08/03\ 13:18:48". #!/usr/bin/perl use Date::Manip; $date1 = $ARGV[0]; $date2 = $ARGV[1]; $date1 =~ m/(\d{2})\/(\d{2})\/(\d{2}) (\d{2})\:(\d{2})\:(\d{2})/; $secs1 = Date_SecsSince1970( $2, $1, "20$3", $4, $5, $6 ); $date2 =~ m/(\d{2})\/(\d{2})\/(\d{2}) (\d{2})\:(\d{2})\:(\d{2})/; $secs2 = Date_SecsSince1970( $2, $1, "20$3", 4, $5, $6 ); $diff = $secs2 - $secs1; print "difference is: $diff seconds";