Linux Lite 1.0.6 - Question about CRON trim weekly

[T1125P]

I went ahead and followed the LL instructions on how to enable trim daily. I'm running LL 1.0.6  I have only 1 SSD in my netbook. 360GB Corsair Force GS and it shows trim does work on it, I used the fstrim command. Now I wanted to really test it by running a small script which I found here:
http://lightrush.ndoytchev.com/random-1/...andworking

I'm at the part Download the script.

It runs but it keeps saying /dev/sdx: no such file or directory.  Maybe I'm doing something wrong? :/