CentOS 7.x ip command

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CentOS 7.x ip command

Add static IP to IPv4 interface using ip command

In CentOS 7.x multiple IPv4 addresses can be associated with same interface without needing aliases (eth0:0). The older ifconfig command will show only one of these multiple addresses.

Hence use following command to check interface ip addresses:

   ip addr show

Add IP to interface using:

   ip address add 10.90.144.251/21 dev enp0s25

Similarly existing IP can be removed using

ip add del 10.0.0.0/21 dev enp0s25

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