system(paste0("ls ",data.dir,"Expression/*",i,"*txt | while read line ; do fname=$(basename $line); head -1 $line > ",data.dir,"Expression/out_genes/",
system(paste0("ls ../output/Expression/*",cancer,"*txt | while read line ; do fname=$(basename $line); head -1 $line > ../output/Expression/out_genes/",
system(paste0("ls ",data.dir,"Expression/*",cancer,"*txt | while read line ; do fname=$(basename $line); head -1 $line > ",data.dir,"Expression/out_genes/",
system(paste0("ls ",data.dir,"Expression/*",i,"*txt | while read line ; do fname=$(basename $line); head -1 $line > ",data.dir,"Expression/out_genes/",
system(paste0("ls ../output/Expression/*",cancer,"*txt | while read line ; do fname=$(basename $line); head -1 $line > ../output/Expression/out_genes/",
system(paste0("ls ",data.dir,"Expression/*",cancer,"*txt | while read line ; do fname=$(basename $line); head -1 $line > ",data.dir,"Expression/out_genes/",