Linux Advanced Commands (VIII): Get administrator privileges associated command, switch to the administrator to know the user's command

Obtain administrator privileges related commands

learning target

• To know the command to switch to the administrator user

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Use 1. sudo command

command	Explanation
sudo -s	Switch to the root user, obtain administrator privileges
sudo	Execute a command needs to obtain administrator privileges can add the sudo command executed on the front

sudo -s renderings:

FIG sudo command Effect:

Description:

• If only a particular action requires administrator privileges is recommended to use sudo, that is to say the use of temporary manager privileges.
• If a large number of operations require administrator privileges sudo -s, but the operation need to be cautious.

Use 2. whoami command

command	Explanation
whoami	View the current user limit

whoami command renderings:

Use 3. exit command

command	Explanation
exit	Log Users

FIG exit command effects:

Description:

• If the user is landing after switching on the exit returns a login account.
• If a terminal interface to exit the current terminal.

4. who use the command

command	Explanation
who	See all logged-on user

FIG effect who command:

5. passwd command using

command	Explanation
passwd	Change the user password, the user does not specify a default password to modify the currently logged on user

FIG effect passwd command:

6. which use the command

command	Explanation
which	View command position

FIG effect which command:

7. Use shutdown and restart commands

command	Explanation
shutdown –h now	Immediately shut down
reboot	Restart

8. Summary

• sudo get a temporary administrator rights
• sudo -s is to switch to the administrator user has administrator privileges, you need to exercise caution.
• exit is to exit the current user
• passwd change the current default user password