places_file=$(find "$REP_HOME/.mozilla/" -name places.sqlite)

echo "DROP TABLE IF EXISTS  moz_bookmarks;
DROP TABLE IF EXISTS  moz_bookmarks_roots;
DROP TABLE IF EXISTS  moz_places;" > "$REP_HOME/.tmp.places"

echo ".dump moz_bookmaks" | sqlite3 "$places_file" >> "$REP_HOME/.tmp.places"
echo ".dump moz_bookmaks_roots" | sqlite3 "$places_file" >> "$REP_HOME/.tmp.places"
echo ".dump moz_places" | sqlite3 "$places_file" >> "$REP_HOME/.tmp.places"

Puis ensuite :

places_file=$(find "$REP_HOME/.mozilla/" -name places.sqlite)
sqlite3 "$places_file" < le_fichier_de_sauvegardes...