final slash (i.e., a/b ) is called the dirname component, and the part following the final ... call is as follows: (1) Within the dirname component of a pathname, symbolic linkshere can involve recursion if the prefix ('dirname') component of a pathname contains a filenamefirstkey() dbm_nextkey() dbm_open() dbm_store() dirname() dlerror() drand48() ecvt() [POSIX.1-2001 only (function removed