By default in Centos 7 minimal installation , ifconfig command is not found, so for obtenining this command , first you need to check which packages yum provide for this.
[root@localhost]# yum provides ifconfig
Loaded plugins: fastestmirror
Repository 'Packages' is missing name in configuration, using id
Loading mirror speeds from cached hostfile
Packages/filelists_db
No matches found
Note: here no packages is installed on the system.
So, using yum we will install the net-tool rpm which is required for ifconfig command
[root@localhost]# yum install net-tools*
Loaded plugins: fastestmirror
Repository 'Packages' is missing name in configuration, using id
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package net-tools.x86_64 0:2.0-0.17.20131004git.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
Package Arch Version Repository Size
Installing:
net-tools x86_64 2.0-0.17.20131004git.el7 Packages 304 k
Transaction Summary
========================================================================
Install 1 Package
Total download size: 304 k
Installed size: 917 k
Is this ok [y/d/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : net-tools-2.0-0.17.20131004git.el7.x86_64 1/1
Verifying : net-tools-2.0-0.17.20131004git.el7.x86_64 1/1
Installed:
net-tools.x86_64 0:2.0-0.17.20131004git.el7
Complete!
Now run the ifconfig command after successfully installed the packages.
[root@localhost]# ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.26.12.1 netmask 255.255.0.0 broadcast 192.26.255.255
inet6 fe80::250:56ff:febf:f6 prefixlen 64 scopeid 0x20<link>
ether 00:50:56:bf:00:f6 txqueuelen 1000 (Ethernet)
RX packets 18939 bytes 1251073 (1.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 433 bytes 63109 (61.6 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 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
[root@localhost]# yum provides ifconfig
Loaded plugins: fastestmirror
Repository 'Packages' is missing name in configuration, using id
Loading mirror speeds from cached hostfile
net-tools-2.0-0.17.20131004git.el7.x86_64 : Basic networking tools
Repo: @Packages
Matched from:
Filename: /usr/sbin/ifconfig
[root@localhost]# yum provides ifconfig
Loaded plugins: fastestmirror
Repository 'Packages' is missing name in configuration, using id
Loading mirror speeds from cached hostfile
Packages/filelists_db
No matches found
Note: here no packages is installed on the system.
So, using yum we will install the net-tool rpm which is required for ifconfig command
[root@localhost]# yum install net-tools*
Loaded plugins: fastestmirror
Repository 'Packages' is missing name in configuration, using id
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package net-tools.x86_64 0:2.0-0.17.20131004git.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
Package Arch Version Repository Size
Installing:
net-tools x86_64 2.0-0.17.20131004git.el7 Packages 304 k
Transaction Summary
========================================================================
Install 1 Package
Total download size: 304 k
Installed size: 917 k
Is this ok [y/d/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : net-tools-2.0-0.17.20131004git.el7.x86_64 1/1
Verifying : net-tools-2.0-0.17.20131004git.el7.x86_64 1/1
Installed:
net-tools.x86_64 0:2.0-0.17.20131004git.el7
Complete!
Now run the ifconfig command after successfully installed the packages.
[root@localhost]# ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.26.12.1 netmask 255.255.0.0 broadcast 192.26.255.255
inet6 fe80::250:56ff:febf:f6 prefixlen 64 scopeid 0x20<link>
ether 00:50:56:bf:00:f6 txqueuelen 1000 (Ethernet)
RX packets 18939 bytes 1251073 (1.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 433 bytes 63109 (61.6 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 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
[root@localhost]# yum provides ifconfig
Loaded plugins: fastestmirror
Repository 'Packages' is missing name in configuration, using id
Loading mirror speeds from cached hostfile
net-tools-2.0-0.17.20131004git.el7.x86_64 : Basic networking tools
Repo: @Packages
Matched from:
Filename: /usr/sbin/ifconfig
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