Change Linux username

非 root 用户，所以会用到 sudo, 使用 distribution 为 Ubuntu22.04-amd64

1. log in to a user other than target user

2. Change home directory:

   sudo mv /home/target_old_username /home/target_new_username

3. Change /etc/passwd:

   sudo vim /etc/passwd

4. Change /etc/shadow:

   sudo vim /etc/shadow

5. Change /etc/group:

   sudo vim /etc/group

附上 chatGPT 的相关回答

/etc/passwd: This file contains information about all the system users. You need to hcange the username in the first field and the home directory in the sixth field.

/etc/shadow: This file contains password information about all the system users. You need to change the username in the first field and the home directory in the first field.

/etc/group: This file contains information about all the system groups. You need to change the old username to the new one in all the lines where it appears.

A tutorial for vim here.