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open(DAT,'<',"./useful_dat.tab")||die "Canot open file\n"; my @file=<DAT>; close DAT; shift @file;##remove header foreach my $line(@file){
open(DAT,'<',"./useful_dat.tab")||die "Canot open file\n"; <DAT>; # discard a line while(my $line = <DAT>){ #loop through the rest