Ubuntu16.04 common command notes

Initialize root password###

Command: sudo passwd

ubuntu@VM-0-3-ubuntu:~$ sudo passwd
Enter newUNIX password: 
Retype newUNIX password: 
passwd: password updated successfully
ubuntu@VM-0-3-ubuntu:~$ 

Modify folder user group and owner

chown [-R]Account name file or directory
chown [-R]Account Name:User group name file or directory

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