在CentOS 7 mini版中使用ifconfig 转
众所周知，“ifconfig”命令用于配置GNU/Linux系统的网络接口。它显示网络接口卡的详细信息，包括IP地址，MAC地址，以及网络接口卡状态之类。但是，该命令已经过时了，而且在最小化版本的RHEL 7以及它的克隆版本CentOS 7，Oracle Linux 7和Scientific Linux 7中也找不到该命令。那么问题来了，怎么在Centos7中查看ip信息呢？怎么操作才能找回以前的习惯呢？
7版系统查看网络信息的命令
CentOS 7最小化系统，使用“ip addr”和“ip link”命令来查找网卡详情。要知道统计数据，可以使用“ip -s link”。
要查看网卡细节：ip addr
[root@linuxprobe ~]#ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: venet0: <BROADCAST,POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/void
inet 127.0.0.1/32 scope host venet0
inet 192.168.1.101/32 brd 192.168.1.101 scope global venet0:0
要查看网络接口统计数据：ip link
[root@linuxprobe ~]#ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN mode DEFAULT
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: venet0: <BROADCAST,POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT
link/void
或者使用：ip -s link
[root@linuxprobe ~]#ip -s link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN mode DEFAULT
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 0 0 0
2: venet0: <BROADCAST,POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT
link/void
RX: bytes packets errors dropped overrun mcast
8515667 6667 0 0 0 0
TX: bytes packets errors dropped carrier collsns
300403 4249 0 0 0 0
在CentOS 7最小化服务器版本中启用“ifconfig”命令
如果你不知道在哪里可以找到ifconfig命令，请按照以下简单的步骤来找到它。
首先，让我们找出哪个包提供了ifconfig命令:
[root@linuxprobe ~]# yum provides ifconfig Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.aol.in * extras: centos.aol.in * updates: centos.aol.in net-tools-2.0-0.17.20131004git.el7.x86_64 : Basic networking tools Repo : @base Matched from: Filename : /usr/sbin/ifconfig
或者你也可以使用以下命令
yum whatprovides ifconfig
这里，“provides”或者“whatprovides”开关用于找出某个包提供了某些功能或文件。
net-tools包提供了ifconfig命令。因此，安装net-tools包也可以使用ifconfig命令。
安装net-tools包
yum install net-tools
现在，你就可以像以往一样使用ifconfig命令了。
[root@linuxprobe ~]# ifconfig -a
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 16436
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
venet0: flags=211<UP,BROADCAST,POINTOPOINT,RUNNING,NOARP> mtu 1500
inet 127.0.0.1 netmask 255.255.255.255 broadcast 0.0.0.0 destination 127.0.0.1
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 0 (UNSPEC)
RX packets 7073 bytes 8549159 (8.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4611 bytes 359201 (350.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
venet0:0: flags=211<UP,BROADCAST,POINTOPOINT,RUNNING,NOARP> mtu 1500
inet 192.168.1.101 netmask 255.255.255.255 broadcast 192.168.1.101 destination 192.168.1.101
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 0 (UNSPEC)
尽情享受吧！
via: http://www.unixmen.com/ifconfig-command-found-centos-7-minimal-installation-quick-tip-fix/
作者：Senthilkumar 译者：GOLinux 校对：Caroline
