Sudo - Design

Design

Unlike the su command, users typically supply their own password to sudo. After authentication, and if the /etc/sudoers configuration file permits the user access, then the system will invoke the requested command. By default the user's password can be retained through a grace period (15 minutes per pseudo terminal), allowing the user to execute several successive commands as the requested user without having to provide a password again.

sudo is able to log each command run. Where a user attempts to invoke sudo without being listed in the sudoers file an error is presented to the user indicating that the attempt has been recorded in the system log.

Read more about this topic:  Sudo

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    If I knew for a certainty that a man was coming to my house with the conscious design of doing me good, I should run for my life ... for fear that I should get some of his good done to me,—some of its virus mingled with my blood.
    Henry David Thoreau (1817–1862)

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