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ifconfig 命令
显示网络所有接口 ifconfig -a -bash-3.2$ ifconfig -a en0: flags=1e080863,480<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),CHAIN> inet 99.99.99.35 netmask 0xffffff00 broadcast 99.99.99.255 tcp_sendspace 262144 tcp_recvspace 262144 rfc1323 1 en1: flags=1e080863,480<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),CHAIN> inet 99.99.99.89 netmask 0xffffff00 broadcast 99.99.99.255 tcp_sendspace 262144 tcp_recvspace 262144 rfc1323 1 lo0: flags=e08084b<UP,BROADCAST,LOOPBACK,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT> inet 127.0.0.1 netmask 0xff000000 broadcast 127.255.255.255 inet6 ::1/0 tcp_sendspace 131072 tcp_recvspace 131072 rfc1323 1只显示网络接口，不带其它信息。ifconfig -l
-bash-3.2# ifconfig -l en0 en1 lo0关闭与启动网络接口 ifconfig en1 up/down
-bash-3.2# ifconfig en1 down -bash-3.2# ifconfig en1 up 查看已启动的网络接口 -bash-3.2# ifconfig -au en0: flags=1e080863,480<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),CHAIN> inet 99.99.99.35 netmask 0xffffff00 broadcast 99.99.99.255 tcp_sendspace 262144 tcp_recvspace 262144 rfc1323 1 lo0: flags=e08084b<UP,BROADCAST,LOOPBACK,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT> inet 127.0.0.1 netmask 0xff000000 broadcast 127.255.255.255 inet6 ::1/0 tcp_sendspace 131072 tcp_recvspace 131072 rfc1323 1
-bash-3.2# ifconfig -lu
en0 lo0 查看已关闭的网络接口 -bash-3.2# ifconfig -ad en1: flags=1e080862,480<BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),CHAIN> inet 99.99.99.89 netmask 0xffffff00 broadcast 99.99.99.255 tcp_sendspace 262144 tcp_recvspace 262144 rfc1323 1
-bash-3.2# ifconfig -ld
en1 -bash-3.2# netstat -in #带*号的显示为关闭的网络接口,此命令可以查看本机的IP地址 Name Mtu Network Address ZoneID Ipkts Ierrs Opkts Oerrs Coll en0 1500 link#2 ee.cb.f0.2.30.2 - 477369 0 24513 0 0 en0 1500 99.99.99 99.99.99.35 - 477369 0 24513 0 0 en1* 1500 link#3 ee.cb.f0.2.30.3 - 2539 0 84 0 0 en1* 1500 99.99.99 99.99.99.89 - 2539 0 84 0 0 lo0 16896 link#1 - 93601 0 93608 0 0 lo0 16896 127 127.0.0.1 - 93601 0 93608 0 0 lo0 16896 ::1 0 93601 0 93608 0 0
可以使用ping命令测试网络的连通性
ping -c 5 99.99.99.35
netstat 命令
显示网络接口的格式，是否有多错误的数据包。 -bash-3.2$ netstat -i Name Mtu Network Address ZoneID Ipkts Ierrs Opkts Oerrs Coll en0 1500 link#2 ee.cb.f0.2.30.2 - 478409 0 24611 0 0 en0 1500 99.99.99 peng2012 - 478409 0 24611 0 0 en1* 1500 link#3 ee.cb.f0.2.30.3 - 2539 0 84 0 0 en1* 1500 99.99.99 99.99.99.89 - 2539 0 84 0 0 lo0 16896 link#1 - 93767 0 93774 0 0 lo0 16896 127 loopback - 93767 0 93774 0 0 lo0 16896 ::1 0 93767 0 93774 0 0 显示本机的路由表 -bash-3.2$ netstat -rn Routing tables Destination Gateway Flags Refs Use If Exp GroupsRoute Tree for Protocol Family 2 (Internet):
99.99.99.0 99.99.99.35 UHSb 0 0 en0 - - => 99.99.99.0 99.99.99.89 UHSb 0 0 en1 - - => 99.99.99/24 99.99.99.35 U 1 20417 en0 - - => 99.99.99/24 99.99.99.89 U 0 53 en1 - - 99.99.99.35 127.0.0.1 UGHS 1 509 lo0 - - 99.99.99.89 127.0.0.1 UGHS 0 17 lo0 - - 99.99.99.255 99.99.99.35 UHSb 0 4 en0 - - => 99.99.99.255 99.99.99.89 UHSb 0 0 en1 - - 127/8 127.0.0.1 U 13 93148 lo0 - - 显示本机所开启服务netstat -a (显示套接字，不显示端口号) netstat -a Active Internet connections (including servers) Proto Recv-Q Send-Q Local Address Foreign Address (state) tcp 0 0 *.* *.* CLOSED tcp 0 0 *.* *.* CLOSED tcp4 0 0 *.* *.* CLOSED tcp4 0 0 *.daytime *.* LISTEN tcp 0 0 *.ftp *.* LISTEN tcp4 0 0 *.ssh *.* LISTEN tcp 0 0 *.telnet *.* LISTEN tcp4 0 0 *.smtp *.* LISTEN tcp4 0 0 *.time *.* LISTEN tcp4 0 0 *.sunrpc *.* LISTEN tcp 0 0 *.smux *.* LISTEN tcp 0 0 *.exec *.* LISTEN tcp 0 0 *.login *.* LISTEN tcp 0 0 *.shell *.* LISTEN tcp 0 0 *.rmc *.* LISTEN tcp4 0 0 *.writesrv *.* LISTEN tcp 0 0 *.5335 *.* LISTEN tcp 0 0 *.5336 *.* LISTEN tcp 0 0 *.wbem-htt *.* LISTEN tcp 0 0 *.wbem-htt *.* LISTEN tcp 0 0 *.6988 *.* LISTEN ...... 显示本机所开启服务（显示端口号） netstat -an netstat -an Active Internet connections (including servers) Proto Recv-Q Send-Q Local Address Foreign Address (state) tcp 0 0 *.* *.* CLOSED tcp 0 0 *.* *.* CLOSED tcp4 0 0 *.* *.* CLOSED tcp4 0 0 *.13 *.* LISTEN tcp 0 0 *.21 *.* LISTEN tcp4 0 0 *.22 *.* LISTEN tcp 0 0 *.23 *.* LISTEN tcp4 0 0 *.25 *.* LISTEN tcp4 0 0 *.37 *.* LISTEN tcp4 0 0 *.111 *.* LISTEN tcp 0 0 *.199 *.* LISTEN tcp 0 0 *.512 *.* LISTEN tcp 0 0 *.513 *.* LISTEN tcp 0 0 *.514 *.* LISTEN tcp 0 0 *.657 *.* LISTEN tcp4 0 0 *.1334 *.* LISTEN tcp 0 0 *.5335 *.* LISTEN tcp 0 0 *.5336 *.* LISTEN tcp 0 0 *.5988 *.* LISTEN tcp 0 0 *.5989 *.* LISTEN tcp 0 0 *.6988 *.* LISTEN ..... 显示本机的端口号21是否开启 netstat -an|grep 21. 设置主机IP地址 smit mktcpip (smit tcpip再进一步选择)Minimum Configuration & Startup
To Delete existing configuration data, please use Further Configuration menus
Type or select values in entry fields.
Press Enter AFTER making all desired changes.[TOP] [Entry Fields]
* HOSTNAME [peng2012] * Internet ADDRESS (dotted decimal) [99.99.99.35] Network MASK (dotted decimal) [255.255.255.0] * Network INTERFACE en0 NAMESERVER Internet ADDRESS (dotted decimal) [] DOMAIN Name [] Default Gateway Address (dotted decimal or symbolic name) [] Cost [] # Do Active Dead Gateway Detection? no + [MORE...2]F1=Help F2=Refresh F3=Cancel F4=List
F5=Reset F6=Command F7=Edit F8=Image F9=Shell F10=Exit Enter=Do本文转自 pk2008 51CTO博客，原文链接:http://blog.51cto.com/837244/1074175
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