ifconfig


Ifconfig is used to configure the kernel-resident network interfaces. It is used at boot time to set up interfaces as necessary. After that, it is usually only needed when debugging or when system tuning is needed.
From man page

If no arguments are given, ifconfig displays the status of the currently active interfaces. If a single interface argument is given, it displays the status of the given interface only; if a single -a argument is given, it displays the status of all interfaces, even those that are down. Otherwise, it configures an interface.
From man page

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If you want to restart a network adapter because it is not configuring correctly, you can set it down with ifconfig ens5 down and then set it up with ifconfig ens5 up.