2020 Y2K Effect in Perl and its effect on Pandora FMS
Just when we thought we had got rid of Y2K, we came across an unexpected effect. The 2020 effect. Buried deep in the system, a basic Perl library has made any date comparison operation with the year 1970 become 2070, starting from January 1, 2020. It may seem not important at all, but for many systems, the “beginning” of the Unix calendar begins precisely in 1970, that is, a base reference date, used in much code precisely since the origin of Unix times, 1970.