__audit_reusename (9) - fill out filename with info from existing entry
basename (1)         - strip directory and suffix from filenames
BIO_append_filename (3ssl) - FILE bio
BIO_read_filename (3ssl) - FILE bio
BIO_rw_filename (3ssl) - FILE bio
BIO_write_filename (3ssl) - FILE bio
File::Basename (3perl) - Parse file paths into directory, filename and suffix.
fnmatch (3)          - match filename or pathname
fnmatch (3am)        - compare a string against a filename wildcard
mktemp (3)           - make a unique temporary filename