rio(1) no Ubuntu 11.10

% cat /usr/share/xsessions/rio.desktop
[Desktop Entry]
Encoding=UTF-8
Type=XSession
Exec=rio
TryExec=rio
Name=Rio
Comment=Plan 9 window manager

Onde rio é um script:

% cat /usr/local/bin/rio
#!/bin/sh

/usr/local/plan9/bin/rio -s -virtuals 4 $*