@flavy69
Only for your better information..
You entered the commands without space between them.
The commands:
and
in fact they were only a single command in one line (it means that you don't have to press the enter key in the middle, but only at the end):
with a space at the end of cp -rf /home/user/MyDocs/icon-transparent.png and the beginning of /usr/share/themes/blanco/meegotouch/icons/icon-l-folder.png

I hope the above it's clear, also for future tweaking..