$apropos 5 passwd |egrep add
adduser.conf(5) - adduser(8) configuration file
alpm(4) - Acer Aladdin 15x3 Power Management controller driver
ethers(5) - ethernet address database
eui64(5) - IEEE EUI-64 address database
gss_accept_sec_context(3), gss_acquire_cred(3), gss_add_cred(3), gss_add_oid_set_member(3), gss_canonicalize_name(3), gss_compare_name(3), gss_context_time(3), gss_create_empty_oid_set(3), gss_delete_sec_context(3), gss_display_name(3), gss_display_status(3), gss_duplicate_name(3), gss_export_name(3), gss_export_sec_context(3), gss_get_mic(3), gss_import_name(3), gss_import_sec_context(3), gss_ind
krb5_address(3), krb5_addresses(3), krb5_sockaddr2address(3), krb5_sockaddr2port(3), krb5_addr2sockaddr(3), krb5_max_sockaddr_size(3), krb5_sockaddr_uninteresting(3), krb5_h_addr2sockaddr(3), krb5_h_addr2addr(3), krb5_anyaddr(3), krb5_print_address(3), krb5_parse_address(3), krb5_address_order(3), krb5_address_compare(3), krb5_address_search(3), krb5_free_address(3), krb5_free_addresses(3), krb5_c
krb5_auth_context(3), krb5_auth_con_init(3), krb5_auth_con_free(3), krb5_auth_con_setflags(3), krb5_auth_con_getflags(3), krb5_auth_con_setaddrs(3), krb5_auth_con_setaddrs_from_fd(3), krb5_auth_con_getaddrs(3), krb5_auth_con_genaddrs(3), krb5_auth_con_getkey(3), krb5_auth_con_setkey(3), krb5_auth_con_getuserkey(3), krb5_auth_con_setuserkey(3), krb5_auth_con_getlocalsubkey(3), krb5_auth_con_setloca
krb5_get_all_client_addrs(3), krb5_get_all_server_addrs(3) - return local addresses
krb5_initlog(3), krb5_openlog(3), krb5_closelog(3), krb5_addlog_dest(3), krb5_addlog_func(3), krb5_log(3), krb5_vlog(3), krb5_log_msg(3), krb5_vlog_msg(3) - Heimdal logging functions
krb5_krbhst_init(3), krb5_krbhst_next(3), krb5_krbhst_next_as_string(3), krb5_krbhst_reset(3), krb5_krbhst_free(3), krb5_krbhst_format_string(3), krb5_krbhst_get_addrinfo(3) - lookup Kerberos KDC hosts
krb5_kt_ops(3), krb5_keytab_entry(3), krb5_kt_cursor(3), krb5_kt_add_entry(3), krb5_kt_close(3), krb5_kt_compare(3), krb5_kt_copy_entry_contents(3), krb5_kt_default(3), krb5_kt_default_name(3), krb5_kt_end_seq_get(3), krb5_kt_free_entry(3), krb5_kt_get_entry(3), krb5_kt_get_name(3), krb5_kt_get_type(3), krb5_kt_next_entry(3), krb5_kt_read_service_key(3), krb5_kt_register(3), krb5_kt_remove_entry(3
gnutls_certificate_set_x509_crl(3) - Used to add CRLs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_crl_file(3) - Used to add CRLs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_crl_mem(3) - Used to add CRLs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_trust(3) - Used to add trusted CAs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_trust_file(3) - Used to add trusted CAs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_trust_mem(3) - Used to add trusted CAs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_crl(3) - Used to add CRLs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_crl_file(3) - Used to add CRLs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_crl_mem(3) - Used to add CRLs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_trust(3) - Used to add trusted CAs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_trust_file(3) - Used to add trusted CAs in a gnutls_certificate_credentials_t structure
gnutls_certificate_set_x509_trust_mem(3) - Used to add trusted CAs in a gnutls_certificate_credentials_t structure
X509_NAME_add_entry_by_txt(3), X509_NAME_add_entry_by_OBJ(3), X509_NAME_add_entry_by_NID(3), X509_NAME_add_entry(3), X509_NAME_delete_entry(3) - X509_NAME modification functions