Pastie is a clipboard manager program. In Oneiric it could be installed by adding a 3rd partie ppa, however at the moment there isn't a Precise build. I tried to manually install the deb package for Oneiric on Precise and it worked.
First install the python-gnome2 dependency:
Then navigate to http://goo.gl/UtNPI and download the deb file (something like pastie_0.6.7.5~ppam1_all.deb).
Finally install the deb file, either by opening it with "Ubuntu Software Center" or using a terminal window: