دستور در صورتی که فاصله گذاشتم
javad@k1lou:~$ compiz config-settings-manager
compiz (core) - Error: Screen 0 on display ":0.0" already has a window manager; try using the --replace option to replace the current window manager.
compiz (core) - Fatal: No manageable screens found on display :0.0
Launching fallback window manager
javad@k1lou:~$ compizconfig-settings-manager
compizconfig-settings-manager: command not found
javad@k1lou:~$ sudo -i
root@k1lou:~# compizconfig-settings-manager
compizconfig-settings-manager: command not found
root@k1lou:~#