Some Password-Change related issues in ubuntu linux.Tested solutions.

Here are some Password-Change related issues in ubuntu linux and their tested solutions:

1.”Authentication token manipulation error“, while trying to change a Ubuntu user’s password:

Possible resaon for this error is that the filesystem night be mounted as read only.  To fix it, simply type:

    mount -o remount,rw /

2. While using sudo passwd command, it gives “password changed successfully” message., but in reality still taking the same old password, and denying the new password:

 To solve this problem, first explicitly switch to the user account whose password you want to change.

     sudo su youusername

 Tip: you may use sudo whoami command to find the current user.

 now try :

     sudo passwd

 Should work.

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