Ubuntu

If you no longer need a user account, it is good idea to delete that account.

Getting ready

You will need super user or root privileges to delete a group from the Ubuntu server.

How to do it...

Follow these steps to delete the user account:

1. Enter the following command to delete a user account:
   $ sudo deluser --remove-home john
2. Enter your password to complete addgroup with root privileges:

How it works…

Once you have groups in place, you can add existing users as well as new users to that group. All access rights and permissions assigned to the group will be automatically available to all the members of the group.

Getting ready

You will need super user or root privileges to add a group member to the Ubuntu server.

How to do it…

Follow these steps to add group members:

Group is a way to organize and administer user accounts in Linux. Groups are used to collectively assign rights and permissions to multiple user accounts.

Getting ready

You will need super user or root privileges to add a group to the Ubuntu server.

How to do it...

Follow these steps to create a group:

1. Enter the following command to add a new group:
   $ sudo addgroup guest
2. Enter your password to complete addgroup with root privileges.

How it works…

In this recipe, you will see how to create multiple user accounts in batch mode without using any external tool.

Getting ready

You will need a user account with root or root privileges.

How to do it...

Follow these steps to create a user account in batch mode:

While installing Ubuntu, we add a primary user account on the server; if you are using the cloud image, it comes preinstalled with the default user. This single user is enough to get all tasks done in Ubuntu. There are times when you need to create more restrictive user accounts. This recipe shows how to add a new user to the Ubuntu server.

Getting ready

You will need super user or root privileges to add a new user to the Ubuntu server.

How to do it…

Follow these steps to create the new user account:

In this article, you will see how to add new users to the Ubuntu server, update existing users, and set permissions for users. You will get to know the default setting for new users and how to change them. Also, you will take a look at secure shell (SSH) access and securing user profiles.

Sometimes, we have a large number of servers to install. In this case, the manual installation will take a lot of time to perform a repetitive task. To solve this problem, there is the automation installation, or what we call the network boot.

For this, we need a machine equipped with a DHCP server and a TFTP server that

will provide us the services and configuration files that we need for the system

to be installed.

The PXE process

Much of the Ubuntu Server installation process fulfils a majority of user needs, and it is used in the same manner by most of the users (newbie or advanced), but the part that requires much more attention and which is customized by many advanced system administrators depending on their needs is the partitioning step. In this section, we will have a look at how to perform an advanced partitioning for

a specific hard disk schema.

In this section, we will have a look at how to install Ubuntu Server manually, either from the CD or the USB key. Here, we will only cover the installation from the CD; the same procedure applies for the installation from the USB key. In the

latter case, you should configure your computer (using the BIOS interface) to boot

from USB.

There is another way to manually install Ubuntu Server, which is via network, but since we will see this procedure in depth in the next Automated installation section, we will not cover it here.