Exercise 1 solution

1. Configuring the time zone to GMT

We can check the current system date by executing the date command. At the very last part of the line that is subsequently printed, the time zone will be shown. In order to configure it, we can use the timedatectl command, or alter the /etc/localtime symbolic link.

So, to achieve this goal, we can use one of the following:

• timedatectl set-timezone GMT
• rm –fv /etc/localtime; ln –s /usr/share/zoneinfo/GMT /etc/localtime

Now, date should report the proper time zone.

2. Allowing passwordless login to the root user using SSH

Doing this will require the following:

• SSH must be installed and available (that means installed and started).
• The root user should have an SSH key generated and added to the list of authorized keys.

First, let’s tackle this with SSH, as seen in the following code snippet:

dnf –y install openssh-server; systemctl enable sshd; systemctl...