ken@titan ~/tmp/pm_11137850/whole_head
$ for i in `ls -1 wh_*`; do echo $i; cat $i; done
wh_001
W_001
wh_002
X_002
wh_003
Y_003
wh_004
Z_004

ken@titan ~/tmp/pm_11137850/just_brain
$ ls -l
total 0