zcat yahB_1.fastq.gz | wc -l > yahB_1.fastq.lines
zcat yahB_2.fastq.gz | wc -l > yahB_2.fastq.lines
zcat yiaU_1.fastq.gz | wc -l > yiaU_1.fastq.lines
zcat yiaU_2.fastq.gz | wc -l > yiaU_2.fastq.lines
zcat yqhC_1.fastq.gz | wc -l > yqhC_1.fastq.lines
zcat yqhC_2.fastq.gz | wc -l > yqhC_2.fastq.lines