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msouth/gist:5423491

Created April 19, 2013 21:53
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When will a calendar for the current year be usable again?
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gistfile1.sh
perl -e 'for $year (2013..2113) {$cal = qx{cal $year}; $cal =~ s/\d{4}//; if ($year eq "2013") {$comp_cal = $cal} else { die "cal $year\n" if $comp_cal eq $cal} }'
cal 2019
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