Hit the enter key after each bold entry. Wait for the prompt to reappear before going to the next step.

- Hit ctl-alt-neighborhood to get to the console.

- at login type: root

- at password you don’t need to type anything. I thought it would be good to add a little security by way of a root password, so I typed in a password and followed the prompts until I’d typed it properly twice.

- at the bash prompt type the line in bold below. It goes to the opera site and gets the olpc files in a compressed tarball (yes, that’s a technical term) and downloads it into the xo. It takes a while, but you get a nice ascii progress indicator.
wget http://snapshot.opera.com/unix/olpc-544/opera-9.12-20070122.10-static-qt.i386-en-544.tar.bz2

- uncompress the file with this command:
tar xvf opera-9.12-20070122.10-static-qt.i386-en-544.tar.bz2

- install the file. I didn’t have any luck with the directions as shown in the link. I simply typed:
./install.sh

- now install the file needed to have opera show up in sugar. First you have to get to the activities folder. At the prompt type:

cd /usr/share/activities

- download the files by typing:
wget http://people.opera.com/howcome/2007/olpc/opera-activity.tar.gz

- uncompress by typing:

tar xvzf opera-activity.tar.gz

- get out of console by hitting ctl+alt+home (circle with 1 dot) (circle with the small dot at the top left of the keyboard)

- restart sugar by hitting ctl+alt+erase

- find opera in the activities menu and browse.

via koaziji on the olpc news forum