As we know “ifconfig” is used to show the details of the network card details, statistic and the situation in GNU/Linux systems but it is used and old way. If you want to use “ifconfig” command in your linux system you should install it from your os repository.
The error received is below.
[root@centos ~]# ifconfig
-bash: ifconfig: command not foundNowadays we use the command, which is given below, to show the IP address, Mac address and the status of the network interface.
ip addrSample output.
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:b2:52:11 brd ff:ff:ff:ff:ff:ff
inet 192.168.2.6/24 brd 192.168.2.255 scope global noprefixroute dynamic ens33
valid_lft 3302sec preferred_lft 3302sec
inet6 fe80::5018:6acc:485b:e277/64 scope link noprefixroute
valid_lft forever preferred_lft foreverTo view the less information of the network interface you can use the following command.
ip linkSample output.
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
link/ether 00:0c:29:b2:52:11 brd ff:ff:ff:ff:ff:ffTo view the detailed packages which flows on the network, enter the following code.
ip -s linkSample output.
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
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: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
link/ether 00:0c:29:b2:52:11 brd ff:ff:ff:ff:ff:ff
RX: bytes packets errors dropped overrun mcast
15206 154 0 0 0 0
TX: bytes packets errors dropped carrier collsns
17767 103 0 0 0 0 Get rid of the ifconfig error.
Now, let’s return the subject and install the package what we need to use ifconfig command in CentOS. Enter the code, which is given below, to your command line.
yum install net-tools -y
Sample output.
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror
Determining fastest mirrors
* base: denizli.centos-mirror.guzel.net.tr
* extras: mirror.fibersunucu.com.tr
* updates: mirror.rackdc.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 | 201 kB 00:00:00
(3/4): updates/7/x86_64/primary_db | 5.0 MB 00:00:06
(4/4): base/7/x86_64/primary_db | 6.0 MB 00:00:09
Resolving Dependencies
--> Running transaction check
---> Package net-tools.x86_64 0:2.0-0.24.20131004git.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
===========================================================================================
Package Arch Version Repository Size
===========================================================================================
Installing:
net-tools x86_64 2.0-0.24.20131004git.el7 base 306 k
Transaction Summary
===========================================================================================
Install 1 Package
Total download size: 306 k
Installed size: 918 k
Downloading packages:
warning: /var/cache/yum/x86_64/7/base/packages/net-tools-2.0-0.24.20131004git.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Public key for net-tools-2.0-0.24.20131004git.el7.x86_64.rpm is not installed
net-tools-2.0-0.24.20131004git.el7.x86_64.rpm | 306 kB 00:00:00
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Importing GPG key 0xF4A80EB5:
Userid : "CentOS-7 Key (CentOS 7 Official Signing Key) <security@centos.org>"
Fingerprint: 6341 ab27 53d7 8a78 a7c2 7bb1 24c6 a8a7 f4a8 0eb5
Package : centos-release-7-6.1810.2.el7.centos.x86_64 (@anaconda)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : net-tools-2.0-0.24.20131004git.el7.x86_64 1/1
Verifying : net-tools-2.0-0.24.20131004git.el7.x86_64 1/1
Installed:
net-tools.x86_64 0:2.0-0.24.20131004git.el7
Complete!
We completed the installation and let’s check it out the code whether it works.
[root@centos ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.2.6 netmask 255.255.255.0 broadcast 192.168.2.255
inet6 fe80::5018:6acc:485b:e277 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b2:52:11 txqueuelen 1000 (Ethernet)
RX packets 8802 bytes 12814700 (12.2 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5227 bytes 374060 (365.2 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
[root@centos ~]# The ifconfig article has completed, thanks for reading. If you want to read more about Linux you visit Linux category.
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