sudo.md

---

---

sudo

sudo stands for Super User DO and allows the user to run any command as the root user

sudo shutdown -r now

The above command shuts down the system as the root user

---

Useful Options / Examples

sudo -u

The -u (user) option causes sudo to run the specified command as a user other than root

Example

sudo -u c4cs ls /home/Document

This command lists the contents of /home/Documents as the user c4cs

sudo -v

The -v (validate) option updates the users timestamp and extends the sudo timeout for 5 minutes

Assuming one already has sudo access, running this command will allowing them to continue using the same sudo privledges for 5 minutes without authentication

sudo -k

The -k (kill) option removes a user's timestamp from sudo and takes away their root privledges

The next sudo command will require a password

sudo -b

The -b (background) option will run the command listed in sudo in the background

Example

sudo -b g++ hugeFile0.cpp hugeFile1.cpp hugeFile2.cpp -o largeExecutable

This command will compile the three given files (potentially taking a very long time) in the background as the root user