In your case it should have a look like
cd [missing path]/public_html/Community-Libertine.fr/periodic; /bin/bash/ -q cron.php.
So you need to check your paths carefully.
thank you i will try
Hello, I put this < /usr/bin/php -q /home/cp1663392p24/public_html/Community-Libertine.fr/periodic/cron.php < and it has worked the word: update is off .. thank you