Утилита host

Программа host определяет имя хоста, используя DNS. Для определения имен хоста используя сервер имен, введите следующую команду:

[root@deep /]# host <FQDN, domain names, host names, or host numbers>

Например:

[root@deep /]# host redhat.com
redhat.com has address 207.175.42.154

где <FQDN, domain names, host names, or host numbers> FDQN - полностью определенное имя домена (www.redhat.com), domain names √ доменное имя (redhat.com), host names - имя хоста (www) или host numbers - адрес хоста (207.175.42.154).

Для поиска всей информации предоставляемой DNS о хосте используйте команду:

[root@deep /]# host <-a domain names >
Например:
[root@deep /]# host -a redhat.com
Trying null domain
rcode = 0 (Success), ancount=6
The following answer is not authoritative:
The following answer is not verified as authentic by the server:
redhat.com 8112 IN NS ns.redhat.com
redhat.com 8112 IN NS ns2.redhat.com
redhat.com 8112 IN NS ns3.redhat.com
redhat.com 8112 IN NS speedy.redhat.com
redhat.com 8112 IN A 207.175.42.154
redhat.com 11891 IN SOA ns.redhat.com noc.redhat.com(
2000021402 ;serial (version)
3600 ;refresh period
1800 ;retry refresh this often
604800 ;expiration period
86400 ;minimum TTL
)
For authoritative answers, see:
redhat.com 8112 IN NS ns.redhat.com
redhat.com 8112 IN NS ns2.redhat.com
redhat.com 8112 IN NS ns3.redhat.com
redhat.com 8112 IN NS speedy.redhat.com
Additional information:
ns.redhat.com 94507 IN A 207.175.42.153
ns2.redhat.com 94507 IN A 208.178.165.229
ns3.redhat.com 94507 IN A 206.132.41.213
speedy.redhat.com 8112 IN A 199.183.24.251

Для получения полного описания домена используйте команду:

[root@deep /]# host <-l domain names >
Например:
[root@deep /]# host -l openna.com
openna.com name server deep.openna.com
openna.com name server mail.openna.com
localhost.openna.com has address 127.0.0.1
deep.openna.com has address 208.164.186.1
mail.openna.com has address 208.164.186.2
www.openna.com has address 208.164.186.3

Эта опция вызовет получение всех данных о зоне для доменного имени ⌠openna.com■. Подобные команды должны использоваться только если это действительно необходимо.

Инсталлированные файлы.

> /etc/rc.d/init.d/named

> /etc/rc.d/rc0.d/K45named

> /etc/rc.d/rc1.d/K45named

> /etc/rc.d/rc2.d/K45named

> /etc/rc.d/rc3.d/K45named

> /etc/rc.d/rc4.d/K45named

> /etc/rc.d/rc5.d/K45named

> /etc/rc.d/rc6.d/K45named

> /etc/named.conf

> /usr/bin/addr

> /usr/bin/nslookup

> /usr/bin/dig

> /usr/bin/dnsquery

> /usr/bin/host

> /usr/bin/nsupdate

> /usr/bin/mkservdb

> /usr/lib/bind

> /usr/lib/bind/include/hesiod.h

> /usr/lib/bind/include/sys

> /usr/lib/bind/include/net

> /usr/lib/bind/lib

> /usr/lib/bind/lib/libbind.a

> /usr/lib/bind/lib/libbind_r.a

> /usr/lib/nslookup.help

> /usr/man/man1/dig.1

> /usr/man/man1/host.1

> /usr/man/man1/dnsquery.1

> /usr/man/man1/dnskeygen.1

> /usr/man/man3/hesiod.3

> /usr/man/man3/gethostbyname.3

> /usr/man/man3/inet_cidr.3

> /usr/man/man3/resolver.3

> /usr/man/man3/getnetent.3

> /usr/man/man3/tsig.3

> /usr/lib/bind/include

> /usr/lib/bind/include/arpa

> /usr/lib/bind/include/arpa/inet.h

> /usr/lib/bind/include/arpa/nameser.h

> /usr/lib/bind/include/arpa/nameser_compat.h

> /usr/lib/bind/include/isc

> /usr/lib/bind/include/isc/eventlib.h

> /usr/lib/bind/include/isc/misc.h

> /usr/lib/bind/include/isc/tree.h

> /usr/lib/bind/include/isc/logging.h

> /usr/lib/bind/include/isc/heap.h

> /usr/lib/bind/include/isc/memcluster.h

> /usr/lib/bind/include/isc/assertions.h

> /usr/lib/bind/include/isc/list.h

> /usr/lib/bind/include/isc/dst.h

> /usr/lib/bind/include/isc/irpmarshall.h

> /usr/lib/bind/include/netdb.h

> /usr/lib/bind/include/resolv.h

> /usr/lib/bind/include/res_update.h

> /usr/lib/bind/include/irs.h

> /usr/lib/bind/include/irp.h

> /usr/man/man3/getaddrinfo.3

> /usr/man/man3/getipnodebyname.3

> /usr/man/man5/resolver.5

> /usr/man/man5/irs.conf.5

> /usr/man/man5/named.conf.5

> /usr/man/man7/hostname.7

> /usr/man/man7/mailaddr.7

> /usr/man/man8/named.8

> /usr/man/man8/ndc.8

> /usr/man/man8/named-xfer.8

> /usr/man/man8/named-bootconf.8

> /usr/man/man8/nslookup.8

> /usr/man/man8/nsupdate.8

> /usr/sbin/ndc

> /usr/sbin/named

> /usr/sbin/named-xfer

> /usr/sbin/irpd

> /usr/sbin/dnskeygen

> /usr/sbin/named-bootconf

> /var/named