When you install CentOS 7 minimal or net install, it does not come with the ifconfig command.
You can use the ifg command, but like most users. In CentOS 6 and CentOS 5, the command was included by default. Most distributions do include the command but not this distribution.
To install the much loved command of ifconfig, type the following it at the command line
yum install net-tools /y
Microsoft created its own Linux Distro 
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