Ubuntu Linux 20.04 최초 접속 시 root 패스워드 초기화

OS환경 : Ubuntu Linux 20.04 (64bit)

방법 : Ubuntu Linux 20.04 최초 접속 시 root 패스워드 초기화

일반 유저로 로그인 후 sudo passwd root 입력

$ sudo passwd root
[sudo] password for oracle: 일반유저 패스워드 입력
New password: root 계정 신규 패스워드 입력
Retype new password: root 계정 신규 패스워드 재입력
passwd: password updated successfully

root 접속 테스트

$ su -
Password: 패스워드 입력
Welcome to Ubuntu 20.04 LTS (GNU/Linux 4.19.104-microsoft-standard x86_64)
 
 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage
 
  System information as of Wed Jun  3 12:20:24 KST 2020
 
  System load:  0.0                Processes:             10
  Usage of /:   0.4% of 250.98GB   Users logged in:       0
  Memory usage: 1%                 IPv4 address for eth0: 172.30.167.74
  Swap usage:   0%
 
0 updates can be installed immediately.
0 of these updates are security updates.
 
 
The list of available updates is more than a week old.
To check for new updates run: sudo apt update
 
 
This message is shown once once a day. To disable it please create the
/root/.hushlogin file.
# 

정상 접속됨

참조 : https://studyforus.tistory.com/223