Default [Q] [Solved] Cp not found

Hi.

I have a problem with adb. When i want to copy from my sdcard to system, i got an error : cp not found.

I check my bin folder, and it's true... Don't have cp oO

Anyone knows how to fix it ? Wanna deodex JPU but i cant ...

Thnks

EDIT : Solved, with install busybox 1.19.3 (and using busybox cp)
Samsung Galaxy 3 (GT-I5801)
Current ROM : CMX Jelly Bean by Marcellusbe
Kernel : Default
Settings : 100-800Mhz OnDemand
Sync on Google, Minus, Dropbox, Facebook, Twitter and others

Currently switch to Samsung Galaxy S3 ..