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63.

Executing Commands with Elevated Privileges

64.

The following commands must be prefaced with the <command>sudo</command> command. Please see <ulink url="https://help.ubuntu.com/community/RootSudo">RootSudo</ulink> for information on using <command>sudo</command> (<abbrev>sudo</abbrev> is short for <quote>superuser do</quote>).

65.

Adding a New Group

66.

The <command>addgroup</command> command is used to create a new group in the system. To create a new group, type: <screen>sudo addgroup foobar</screen> The above command will create a new group called <emphasis role="strong">foobar</emphasis>.

67.

Adding a New User

68.

The <command>adduser</command> command is used to create a new user on the system. To create a new user, type: <screen>adduser foobar</screen> which will create a new user called <emphasis role="strong">foobar</emphasis>.

69.

Add or Change a User Password

70.

The <command>passwd</command> command is used to assign a new password to a new user or to change the current password for an existing user. To add a password or change the password for the user <emphasis role="strong">foobar</emphasis>, type: <screen>passwd foobar</screen> For new users, this will generate a prompt to enter the new password. For an existing user, there will be a prompt for the existing password before the prompt for a new password.

71.

Assign User to Group

72.

To assign the user <emphasis role="strong">foobar</emphasis> to the group <emphasis role="strong">barfoo</emphasis>, type: <screen>adduser foobar barfoo</screen>