nohup samtools sort -n -o 1-byname.bam 1.bam &
nohup samtools sort -n -o 2-byname.bam 2.bam &
nohup samtools sort -n -o 3-byname.bam 3.bam &
nohup samtools sort -n -o 4-byname.bam 4.bam &
nohup samtools sort -n -o 5-byname.bam 5.bam &
nohup samtools sort -n -o 6-byname.bam 6.bam &