fichiers=$(ls /etc/vsftpd/user_conf)
users=""
lignes=$(cat /etc/vsftpd/login.txt)
nb=1
for ligne in $lignes
do
    if [ $(($nb%2)) -ne 0  ];
    then
         users="$users $ligne"
    fi
    nb=$(($nb+1))
done
for conf in $fichiers
do
    found=0
    for user in $users
    do
        if [ $conf = $user ];
        then
            found="1"
        fi
    done
    if [ $found != "1" ];
    then
        rm -f /etc/vsftpd/user_conf/$conf
        echo "Fichier /etc/vsftpd/user_conf/$conf supprimé"
    fi
done