Hello Everyone,

In this tutorial,

Let Us Reset Root Password & Forgetter…

To Fix Broken Sudo.......

Errors that you are getting..........

Error 1:- you may notice an error saying you're not in the sudoers file and the incident is going to be reported.

Error 2:- sorry user usuario is not allowed to execute '/usr/bin/passwd root' as root on.

Error 3:- Give root password for maintenance (or type Control-D to continue)
SOLVING ERROR 3 BY BELOW STEP FOLLOW
Step1 :- fsck (First You need to Check file checking error, if doesn't solve follow below step)
Step2 :- mount -t proc proc /proc
Step3 :- mount -o remount, rw / or mount -ro remount,rw /
Step4 :- passwd vi /etc/default/locale
Step5 :- sync reboot
Step6 :- reboot

or option(above doesn't solve follow below step)

Step7 :- mount | grep ' on / '
That command produces something like /dev/sda1 on / type ext4 (rw,errors=remount-ro,commit=0) as the output
Step8 :- sudo mount /dev/sda1 /mnt
Replace /dev/sda1 with the device name of the partition containing your Ubuntu system's root filesystem, if different.
Step9 :- sudo mount /dev/sda1 /mnt
Step10 :- passwd root
Step11 :- exit
Step12 :- sudo umount /mnt
Step13 :- exit
Step14 :- reboot

Cause and symptoms :-

the /etc/sudoers file has been altered to no longer allow users in the admin group to escalate privilege

the permissions on the /etc/sudoers file are changed to something other than 0440
a user who should not have been has been taken out of the admin group.

By above error and cause can be done by following steps.....

To Reset Root Passwd

step1 :- Restart your server or desktop

step2 :- press continue shift untill boot menu show

step3 :- select ubuntu generic second option press Enter

step4 :- then select root shell press Enter

step5 :- type mount -o rw,remount /

step6 :- sudo passwd root or passwd
assign passwd and then repeat again the same passwd

Note :- inplace of root you can set your username or hostname any name that You assign during Installation OR Login.

You can also Create NEW USER
step7 :- sudo adduser username (Replace USERNAME with your username)
Step8 :- sudo passwd username

If you don't know your username, you can get a list of users on the system by running:
Step9 :- ls /home


NOTE :- For Any Clarification Please Below

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