Opera unite is a feature in the Opera browser that was abandoned in Opera 12.
In Windows, keeping Opera 11 and installing v12 on top of it, or upgrading, opera-unite stays into the browser.
In Ubuntu, by installing the v12 deb or by upgrading to v12 after adding it to software sources (like this), opera-unite is lost.
Is there a way of upgrading to v12 without losing opera unite, like I was able to do in Windows?
It seems that the simple way is just to use the last version of Opera (that does not have opera unite) and in parallel to use a "portable" Opera 11. That is, download the tar.gz file of Opera 11 (here), extract into any directory, and execute opera.shell file. Of course, a shortcut (launcher,etc) could be added on the desktop or to menus. In Lubuntu, editing the opera.desktop.file, the menu would look like this:
Of course, the solution (like the question) is limited to the period in which the server for opera-unite will still work. Hopefully, an extension would take the same functions into the future.
