USER_TO_REVOKE='__username__' DATABASES=$(sudo -u postgres psql -t -c "SELECT datname FROM pg_database WHERE datistemplate = false;") for DB in $DATABASES; do echo "Revoking privileges in database: $DB" sudo -u postgres psql -d "$DB" -c "REVOKE ALL PRIVILEGES ON DATABASE \"$DB\" FROM $USER_TO_REVOKE;" done echo "Privileges revoked from $USER_TO_REVOKE"