How to change user password under linux

How to change the user password under Linux: 1. Execute the [passwd username] command; 2. Enter the new password according to the prompts and press Enter; 3. Enter the new password again and press Enter.

Linux uses the passwd command to change the password. Run passwd as the root user. passwd user_name can set or modify the password of any user. An ordinary user can only modify it by running passwd. own password.

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[root@localhost ~]#  passwd  ##修改root用户密码
Changing password for user root..
New password: ##输入新密码
Retype new password:  ##再次确认新密码
passwd: all authentication tokens updated successfully.

[root@localhost ~]# passwd hadoop  ##修改hadoop用户密码
Changing password for user hadoop.
New password:  ##输入新密码
Retype new password:  ##再次确认新密码
passwd: all authentication tokens updated successfully.

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