idx=/users/rg/cklein/human/chipseq/ucsc/index.macrophage.tsv 
awk '{print $1}' $idx | while read f; do ln -s $f; done
idx=/users/rg/cklein/human/chipseq/ucsc/index.bcell.tsv 
awk '{print $1}' $idx | while read f; do ln -s $f; done