lftp -u login host
cd mon_dossier_local/
lftp -u login,password ftp.domain.com <<END_SCRIPT
mirror -R ./ ./
quit
END_SCRIPT
lftp ftp://identifiant:motdepasse@hostname -e "mirror -e -R -x dossier_ignore_a -x dossier_ignore_b /emplacement_local /emplacement_distant ; quit"