Ls query the current directory to the ls/ls/boot

Dhclient automatically obtain IP

CTRL + L CLS

The TAB key can be convenient to let you remember the path

Vi is a editor, the equivalent of a text, edit as I can enter the edit mode, esc to exit the edit mode, w, q, : wq save and back out

The ifconfig and IP add to check the IP address

Systemctl restart service systemctl restart network. Restart the service network

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