背景：  Linux16

解決辦法：

root登入系統後，修改密碼時出現"authentication token manipulation error"

This is the result of trying to work on a file system while mounted as read-only. The solution is a simple one. Before making changes to the users password mount the filesystem as read-write which allows for the necessary changes to be made.

mount -o rw,remount /
Now try to change the users passwords again.

執行 mount -o rw,remount /  （執行後沒有任何提示）即可修改