if [ "$user" != "root" ]; then
id -u "$user" > /dev/null 2> /dev/null || test_skip "missing user $user"
chown "$user:$(id -g "$user")" "$TEST_DIR" || test_skip "could not chown $TEST_DIR"
- su "$user" -s /bin/bash -c "touch $TEST_DIR/test" 2> /dev/null || \
+ su "$user" -s /bin/sh -c "touch $TEST_DIR/test" 2> /dev/null || \
test_skip "$user cannot access $TEST_DIR"
rm "$TEST_DIR/test"
fi