Sudo

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app-admin/sudo


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Summary: Allows users or groups to run commands as other users

Use Flags

sendmail
Allow sudo to send emails with sendmail.
offensive
Let sudo print insults when the user types the wrong password.

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Sudo

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sudo allows privilege escalation for non root users to perform restricted actions while in a locked down user environment.

Emerge

# emerge sudo


Configuration

Passwordless

The sudo configuration file is located @ /etc/sudoers.

$su -c 'nano /etc/sudoers'


Remove the # in the line....

%wheel ALL=(ALL) NOPASSWD: ALL

Add your user to the wheel group to enable sudo:

$ su -c 'gpasswd -a $USER wheel'


Either log out, and in again or restart:

$ su -c 'shutdown -r now'


Disabling Root Access By Password

To better secure a system, one may desire to disable root logins by password.

# passwd --lock root


to access root:

$ sudo su


Root can also be accessed by logging in via ssh keys, or as a restricted user then sudo su as above.

Bash Completion

Users that want bash completion with sudo need to run this once.

$ echo "complete -cf sudo" >> $HOME/.bashrc