When starting a demo, the following errors arises:
ImportError:libtinfo.so.5: cannot open shared object file: No such file or directory
Under Ubuntu, version 8.10, the entrypoints for libinfo are part of ncurses. The libtinfo.so functionality is built into the libncurses.so shared library.
For software that expects the libtinfo.so object, do the following:
sudo ln -s /usr/lib/libncurses.so.5 /usr/lib/libtinfo.so.5 sudo ln -s /usr/lib/libtinfo.so.5 /usr/lib/libtinfo.so
Kaushikprajapati's Blog 
hi, I looking for to ubuntu version 10.04, where I can find?
A bit late, but this could help someone today or in the future.
For 10.04 the libncurses.so.5 has a different path, so the symbolic links to do are the following:
ln -s /lib/libncurses.so.5 /usr/lib/libtinfo.so.5
ln -s /usr/lib/libtinfo.so.5 /usr/lib/libtinfo.so
Cheers.
ok, I understood the ‘ln’ 🙂
Thank you – this saved me some headache!
Thanks…. just downloaded Quake2World free… (Ubuntu 10.04) and it didn’t run until I did this… thanks!