剛安裝了linxu，但是可以ping www.baidu.com，但是不能使用/ifconfig指令，也不能使用/sbin/ifconfig指令，最後，通過安裝”yum install net-tools.x86_64” 解決了。
*********************************************************************************************************
[[email protected] ~]# ifconfig
-bash: ifconfig: 未找到指令
[[email protected] ~]# /sbin/ifconfig
-bash: /sbin/ifconfig: 沒有那個檔案或目錄
[[email protected] ~]# yum install net-tools.x86_64
已加載插件：fastestmirror
Determining fastest mirrors
* base: mirrors.aliyun.com
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
base | 3.6 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/4): base/7/x86_64/group_gz | 166 kB 00:00:00
(2/4): extras/7/x86_64/primary_db | 188 kB 00:00:00
(3/4): updates/7/x86_64/primary_db | 3.4 MB 00:00:00
(4/4): base/7/x86_64/primary_db | 6.0 MB 00:00:09
正在解決依賴關系
--> 正在檢查事務
---> 軟體包 net-tools.x86_64.0.2.0-0.24.20131004git.el7 将被 安裝
--> 解決依賴關系完成
依賴關系解決
===========================================================================================================
Package 架構 版本 源 大小
===========================================================================================================
正在安裝:
net-tools x86_64 2.0-0.24.20131004git.el7 base 306 k
事務概要
===========================================================================================================
安裝 1 軟體包
總下載下傳量：306 k
安裝大小：918 k
Is this ok [y/d/N]: y
Downloading packages:
警告：/var/cache/yum/x86_64/7/base/packages/net-tools-2.0-0.24.20131004git.el7.x86_64.rpm: 頭V3 RSA/SHA256 Signature, 密鑰 ID f4a80eb5: NOKEY
net-tools-2.0-0.24.20131004git.el7.x86_64.rpm 的公鑰尚未安裝
net-tools-2.0-0.24.20131004git.el7.x86_64.rpm | 306 kB 00:00:00
從 file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 檢索密鑰
導入 GPG key 0xF4A80EB5:
使用者ID : "CentOS-7 Key (CentOS 7 Official Signing Key) <[email protected]>"
指紋 : 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
軟體包 : centos-release-7-5.1804.el7.centos.x86_64 (@anaconda)
來自 : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
是否繼續？[y/N]：y
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在安裝 : net-tools-2.0-0.24.20131004git.el7.x86_64 1/1
驗證中 : net-tools-2.0-0.24.20131004git.el7.x86_64 1/1
已安裝:
net-tools.x86_64 0:2.0-0.24.20131004git.el7
完畢！
[[email protected] ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.246.124 netmask 255.255.255.0 broadcast 192.168.277.251
inet6 fe80::77e5:1ffd:1a6e:7279 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:5b:f2:c7 txqueuelen 1000 (Ethernet)
RX packets 10792 bytes 11237387 (10.7 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4240 bytes 347514 (339.3 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (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
[[email protected] ~]#
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