1.4.6

You want to know more about the usage, command syntax, and options available with the Linux ifconfig command. What would you enter at the command prompt to display this information about ifconfig?

Entering man ifconfig will display the manual page for the ifconfig command. It's very similar to the help screen, but it provides more detail.

What would you enter at the command prompt to start a new Bourne-again shell (bash) session?

The bash command opens a Bourne-again shell (bash) session. The Bourne-again shell is the standard shell used in most Linux computers. It uses commands similar to a UNIX shell.

What would you enter at the command prompt on a Linux system to display the IP addresses and the subnet masks assigned to each network interface on a Linux system?

The ifconfig command displays the IP addresses and the subnet masks assigned to each network interface installed on a Linux system.

What would you enter at the command prompt on a Linux system to display a list of files and subdirectories that exist within the present working directory?

The ls command displays a list of files and subdirectories that exist on a Linux system within the present working directory.

You are logged in as a user with limited system privileges. You are the Linux system administrator, and you have the password to the root user account. When you need to switch to root user to perform administrative tasks, what command should you enter at the command prompt?

The su - command switches ownership of the current session to the root user. Entering a space and a dash after su ensures that you will have access to the home directory and environment variables assigned to the root user. You must enter the root user password to proceed after entering the su - command.

What would you enter at the command prompt on a Linux system to display the present working directory?

Use pwd to show the present working directory.

A technician wants to move a file called widget.txt from the current directory to /home/fred. Which of the following commands would the technician use?

mv widget.txt /home/fred

A technician would like to completely shut down and power down the system 10 minutes after notifying all users. Which of the following commands should the technician use?

shutdown -h +10 message