UNIX系统常用命令(3)

[hbwork@helius hbwork]$ nslookup

Default Server:

Address: 202.118.66.6

>

Server:

Address: 202.118.66.6

Name:

Address: 202.118.66.18

Aliases:

> set q=ns #查询相应域的DNS服务器

> #输入要查询的域名

Server: #默认域名服务器为 Address: 202.118.66.6 #参考/etc/resolv.conf文件

nameserver =

nameserver =

nameserver =

internet address = 202.118.66.8

internet address = 202.118.68.1

internet address = 202.118.69.1

UNIX系统常用命令

internet address = 202.118.70.1

internet address = 202.118.71.1

internet address = 202.118.66.16

internet address = 202.118.66.6

> #查询的域名服务器

Server:

Address: 202.118.66.6

Non-authoritative answer:

nameserver =

Authoritative answers can be found from:

internet address = 202.96.64.68

> server

Default Server:

Address: 202.96.64.68

server:

Address: 202.96.64.68

Non-authoritative answer:

canonical name = > #查询域的MX记录

Server:

Address: 202.96.64.68

Non-authoritative answer:

preference = 1, mail exchanger =

Authoritative answers can be found from:

nameserver =

nameserver =

nameserver =

internet address = 202.118.66.8

internet address = 202.118.66.6 internet address = 202.118.71.1

internet address = 202.118.66.16

internet address = 202.118.68.1

internet address = 202.118.69.1

internet address = 202.118.70.1

UNIX系统常用命令

> exit

17.5 ping

TCP/IP ICMP(Internet Control Message Protocol)诊断工具

ping [hostname|IpAddress]

Error Message: host unreachable

network unreachable

[hbwork@helius hbwork]$ ping 202.118.66.1

PING 202.118.66.1 (202.118.66.1): 56 data bytes

64 bytes from 202.118.66.1: icmp_seq=0 ttl=255 time=23.1 ms 64 bytes from 202.118.66.1: icmp_seq=1 ttl=255 time=2.1 ms 64 bytes from 202.118.66.1: icmp_seq=2 ttl=255 time=1.9 ms

--- 202.118.66.1 ping statistics ---

3 packets transmitted, 3 packets received, 0% packet loss round-trip min/avg/max = 1.9/9.0/23.1 ms

17.6 hostname

显示或设置主机名

17.7 domainname

显示或设置主机域名

17.8 traceroute

Windows 95: tracert

traceroute hostname

traceroute destionation_ip_address

17.9 arp

显示或设置相应主机/ip地址的mac地址

相关文件: /proc/net/arp

cat /proc/net/arp

$arp hostname

$arp -a

$arp ip_address

显示或设置主机名需要root权限

#arp -s hostname eth_address [temp] [pub]

UNIX系统常用命令

#arp -d hostname

#arp -d ip_address

#arp -f mac_ip_map_file 常用文件名为/etc/ether