Problemi al passo 4, da terminale mi appare Quanto segue
root@manrico-Parallels-Virtual-Platform:/home/manrico# sudo
usage: sudo -h | -K | -k | -L | -V
usage: sudo -v [-AknS] [-g groupname|#gid] [-p prompt] [-u user name|#uid]
usage: sudo -l[l] [-AknS] [-g groupname|#gid] [-p prompt] [-U user name] [-u
user name|#uid] [-g groupname|#gid] [command]
usage: sudo [-AbEHknPS] [-C fd] [-g groupname|#gid] [-p prompt] [-u user
name|#uid] [-g groupname|#gid] [VAR=value] [-i|-s] [<command>]
usage: sudo -e [-AknS] [-C fd] [-g groupname|#gid] [-p prompt] [-u user
name|#uid] file ...
root@manrico-Parallels-Virtual-Platform:/home/manrico# a p t −g e t
a: comando non trovato
root@manrico-Parallels-Virtual-Platform:/home/manrico# install
install: manca il file operando
Usare «install --help» per ulteriori informazioni.
root@manrico-Parallels-Virtual-Platform:/home/manrico# php5−i m a g i c k
php5−i: comando non trovato
root@manrico-Parallels-Virtual-Platform:/home/manrico# php5
