I used this tutorial to install Jail to my Gentoo -> http://gentoo-wiki.com/HOWTO_Jail.
I tried it few times. Those base commands like cp,mkdir,vi etc. worked well. But with irssi I got this error "setupterm() failed for TERM=xterm: 0 Can't initialize screen handling, quitting." and more "You can still use the dummy mode with -d parameter". If I'll try "irssi -d" then I'll get "Can't open perl script "-e": Permission denied".
And with "screen" I get error "Must be connected to a terminal.". I hope that somebody could help with these informations.