char *extract_trimmed_name (const STRUCT_UTMP *ut);
int read_utmp (char const *file, size_t *n_entries, STRUCT_UTMP **utmp_buf,
char *extract_trimmed_name (const STRUCT_UTMP *ut);
int read_utmp (char const *file, size_t *n_entries, STRUCT_UTMP **utmp_buf,