From what I've read:

date -d "1 day ago"

should be smart enough to know that on the first day of the month, 1 day ago was 30|31 (or 28|29) of LAST month. Also true for January 1 (and knowing it was last month AND last year). I tested like this:

bash-3.2$ date +%j
193
bash-3.2$ date -d "193 day ago "
Sat Dec 31 14:54:22 UTC 2011

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Should this hold true?

In reply to Re^3: Date Handling in Perl by joeymac
in thread Date Handling in Perl by joeymac

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