for fname in $(mktemp -u $DIR/$tdir/.$tfile.XXXXXX) \
$(mktemp $DIR/$tdir/$tfile.XXXXXXXX); do
touch $fname || error "touch $fname failed"
for fname in $(mktemp -u $DIR/$tdir/.$tfile.XXXXXX) \
$(mktemp $DIR/$tdir/$tfile.XXXXXXXX); do
touch $fname || error "touch $fname failed"