Solution to isnotinthesudoersfile in Ubuntu

In Ubuntu12.04, when sudoapt-getinstallXXX is used, the usernameisnotinthesudoersfile problem suddenly exists and I will check the username type. There are at least two methods to solve this problem: i. SystemSettings-& gt; UserAccounts-& gt; click Unlock-& gt; enter

In Ubuntu12.04, when sudo apt-get install XXX is used, the username is not in the sudoers file problem suddenly exists.

Then I checked the username type, which is a standard user instead of an administrator user.

There are at least two ways to solve this problem:

I. System Settings-> User Accounts-> click Unlock-> enter the root password-> change AccountType to Administrator (Administrator)-> restart

II.

Under the root user, change the/etc/sudoers permission to 640 (chmod 640/etc/sudoers)-> vim/etc/sudoers-> Find root ALL = (ALL: ALL) ALL-> Add

Username ALL = (ALL: ALL) ALL-> modify the/etc/sudoers permission to 440 (chmod 440/etc/sudoers)-> restart

There are two methods I know. If there are other methods, please leave a message.

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