open $readhandle, "<", "Input.log"; open $writehandle, ">", "Output.log"; #### open my $readhandle, '<', 'Input.log' or die "Cannot open 'Input.log' $!"; open my $writehandle, '>', 'Output.log' or die "Cannot open 'Output.log' $!"; #### while(<$readhandle>) { $line = readline($readhandle); #### while ( my $line = <$readhandle> ) { #### $line = ~/(.)\n/;