KfWiki: SUDO

SUDO

Sudo allows a non-root user to execute programs as root.

/etc/sudoers

This file defines who can sudo. admin will be able to sudo by supplying the root password, while superuser can sudo without a password.

# Allow root to run any commands anywhere 
admin    ALL=(ALL)       ALL
superuser    ALL=NOPASSWD:   ALL

# Allow user to run certain commands w/o password
Cmnd_Alias BASHSOUND = /bin/bash, /usr/local/bin/cmictl
smith              ALL=(ALL)       NOPASSWD: BASHSOUND, PASSWD:/usr/bin/tcsh

# command with arguments
jane   ALL=(ALL) NOPASSWD: /usr/bin/vi /etc/passwd

Another example to allow sudo to another user, other than root:

smith	ALL = (testusr) NOPASSWD: /testsudo.sh

To run, do this:

sudo -u testusr /testsudo.sh

sudo bash

On systems where su cannot be granted, sudo is a good alternative. Simply do a sudo bash gives you virtually the same thing as "su -"

KfWiki : LinuxSudo

SUDO

/etc/sudoers

sudo bash