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# Golfed generation of current date/time
@t=map{$_+{4,1,5,1900}->{5-$i++}}(reverse localtime)[3..8];
                                                                      
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# Print the date/time
printf "%d-%d-%d %02d:%02d:%02d\n", @t;
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Update:  Or even shorter (55 chars):

@t=map$_+{1,1,0,1900}->{$i++},(localtime)[5,4,3,2,1,0];
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(Update:  Fixed typos in the above line).