UUID_COMPARE(3) UUID_COMPARE(3) uuid_compare - compare whether two UUIDs are the same #include int uuid_compare(const uuid_t uu1, const uuid_t uu2) The uuid_compare() function compares the two supplied uuid variables uu1 and uu2 to each other. Returns an integer less than, equal to, or greater than zero if uu1 is found, respectively, to be lexicographically less than, equal, or greater than uu2. Theodore Y. Ts'o uuid(3), uuid_clear(3), uuid_copy(3), uuid_generate(3), uuid_is_null(3), uuid_parse(3), uuid_unparse(3) libuuid 2.15.1 util-linux . Linux Kernel Archive . util-linux 2.41 2025-03-29 UUID_COMPARE(3)