Allowing the install option to be executed with this parameters:

Options:
 --silent                           Execute the migration with out asking questions.
 --sitename
 --institution
 --institution_url
 --encrypt_method
 --permissions_for_new_directories
 --permissions_for_new_files
 --firstname
 --lastname
 --username
 --password
 --email
 --language
 --phone
 --driver
 --host
 --dbname
 --user

 In order to see the list you can do: for example:
 php chash.php chamilo:install 1.10.0 /var/www/chamilo --help