Error after usb stick cloning

[ipe]

cat: /sys/block/s: No such file or directory
cat: sda/stat: No such file or directory
cat: /sys/block/s: No such file or directory
cat: sda/stat: No such file or directory
grep: sda$: No such file or directory
/home/meteohub/wear.sh: /home/meteohub/wear.sh: 38: Syntax error: +

The problem is here:

root@meteohub:~$ mount | grep "/ type"
rootfs on / type rootfs (rw)
/dev/sda1 on / type ext3 (rw,noatime,data=ordered)

So, DEV has two lines:

DEV =
s
sda