20個對Linux專家非常有用命令

Linux命令 在這篇文章中我將解釋管理 Linux 服務器所需的一些命令。

41. 命令: ifconfig

ifconfig用來配置常駐內核的網絡接口信息。在系統啟動必要時用來設置網絡適配器的信息。之後，它通常是只需要在調試時或當系統需要調整時使用。

檢查活動網絡適配器

[avishek@tecmint ~]___FCKpd___0nbsp;ifconfig 
eth0      Link encap:Ethernet  HWaddr 40:2C:F4:EA:CF:0E 
inet addr:192.168.1.3  Bcast:192.168.1.255  Mask:255.255.255.0 
inet6 addr: fe80::422c:f4ff:feea:cf0e/64 Scope:Link 
UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 
RX packets:163843 errors:0 dropped:0 overruns:0 frame:0 
TX packets:124990 errors:0 dropped:0 overruns:0 carrier:0 
collisions:0 txqueuelen:1000 
RX bytes:154389832 (147.2 MiB)  TX bytes:65085817 (62.0 MiB) 
Interrupt:20 Memory:f7100000-f7120000 
lo        Link encap:Local Loopback 
inet addr:127.0.0.1  Mask:255.0.0.0 
inet6 addr: ::1/128 Scope:Host 
UP LOOPBACK RUNNING  MTU:16436  Metric:1 
RX packets:78 errors:0 dropped:0 overruns:0 frame:0 
TX packets:78 errors:0 dropped:0 overruns:0 carrier:0 
collisions:0 txqueuelen:0 
RX bytes:4186 (4.0 KiB)  TX bytes:4186 (4.0 KiB) 

檢查所有的網絡適配器

“-a”參數用來顯示所有網絡適配器(網卡)的詳細信息,包括那些停用的適配器。

[avishek@tecmint ~]___FCKpd___1nbsp;ifconfig -a 
eth0      Link encap:Ethernet  HWaddr 40:2C:F4:EA:CF:0E 
inet addr:192.168.1.3  Bcast:192.168.1.255  Mask:255.255.255.0 
inet6 addr: fe80::422c:f4ff:feea:cf0e/64 Scope:Link 
UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 
RX packets:163843 errors:0 dropped:0 overruns:0 frame:0 
TX packets:124990 errors:0 dropped:0 overruns:0 carrier:0 
collisions:0 txqueuelen:1000 
RX bytes:154389832 (147.2 MiB)  TX bytes:65085817 (62.0 MiB) 
Interrupt:20 Memory:f7100000-f7120000 
lo        Link encap:Local Loopback 
inet addr:127.0.0.1  Mask:255.0.0.0 
inet6 addr: ::1/128 Scope:Host 
UP LOOPBACK RUNNING  MTU:16436  Metric:1 
RX packets:78 errors:0 dropped:0 overruns:0 frame:0 
TX packets:78 errors:0 dropped:0 overruns:0 carrier:0 
collisions:0 txqueuelen:0 
RX bytes:4186 (4.0 KiB)  TX bytes:4186 (4.0 KiB) 
virbr0    Link encap:Ethernet  HWaddr 0e:30:a3:3a:bf:03 
inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0 
UP BROADCAST MULTICAST  MTU:1500  Metric:1 
RX packets:0 errors:0 dropped:0 overruns:0 frame:0 
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 
collisions:0 txqueuelen:0 
RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B) 

停用網絡適配器

[avishek@tecmint ~]___FCKpd___2nbsp;ifconfig eth0 down 

啟用網絡適配器

[avishek@tecmint ~]___FCKpd___3nbsp;ifconfig eth0 up 

指定IP地址到網絡適配器

為網絡適配器eth0設定IP地址“192.168.1.12”.

[avishek@tecmint ~]___FCKpd___4nbsp;ifconfig eth0 192.168.1.12 

更改網絡適配器eth0的子網掩碼：

[avishek@tecmint ~]___FCKpd___5nbsp;ifconfig eth0 netmask 255.255.255. 

更改網絡適配器eth0的廣播地址：

[avishek@tecmint ~]___FCKpd___6nbsp;ifconfig eth0 broadcast 192.168.1.255 

為網絡適配器eth0指定IP地址,子網掩碼，廣播地址：

[avishek@tecmint ~]___FCKpd___7nbsp;ifconfig eth0 192.168.1.12 netmask 255.255.255.0 broadcast 192.168.1.255 

注Note: 如果你設置一塊無線網卡的信息,你可以使用的命令是“iwconfig”.欲知更多ifconfig命令的例子和使用方法。