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Field: 0 5 6 7 8 File 1: ['CHROM', ... 'SAMPLE_1A', 'SAMPLE_1B', 'SAMPLE_2A', 'SAMPLE_2 +B'] File 2: ['CHROM', ... 'SAMPLE_1', 'SAMPLE_2', 'SAMPLE_3']
... my $header1 = <$in1>; ... print '[', join(', ', @out), "]\n"; } ...