Hello,

I am trying to change the @RG from "ID:i" to "ID:MyFileName" in a number of files using a while read loop. My syntax is as follows:

ls *.sorted.bam|awk -F "." '{print $1}'| while read name; do
samtools view -H $name.sorted.bam| sed 's/ID:i/ID:$name/'|samtools reheader - $name.sorted.bam > $name.sorted_rh.bam;
done

Everything works perfectly except in the reheadered bam file the "ID:i" is replaced with "ID:$name" not the file name. Any ideas about how to fix this? When not in a loop the sed command changes the strings correctly.

Thanks