pls see the attach pdf and follow the instruction. thanks
CS308 – Operating System
Assignment III (10 points)
Part I (3 points):
While working with computers, you may need to create a file(s) and a folder(s). You can -in each folder- find, create,
and remove a file(s) and a sub-folder(s). You can also -in each sub-folder- find, create, and remove a file(s) and a sub-
folder(s), and so on. A folder, in the field of operating systems, is referred to as a directory. Sub-folder means folder
within a folder. Such a structure of directories, sub-directories, and files is known as a file system (as we will discuss
more in unit 6). In this part of the assignment, we will start a discussion on some Linux commands to navigate within
a file system, and discuss more commands in assignment4.
Open the Ubuntu virtual machine you installed. After your log in using the credentials, open a terminal, and test the
Any Linux command is structured as follows:
The command [list of attributes/options as input(s) to the command]
Very similar to when you double click on a folder (e.g., Downloads) to see the content (files and sub-folder), â€œlsâ€ –
which stands for List- is used to display information about the files and sub-directories in the current directory. Do
some search on the internet to read about the following â€œlsâ€ options. Type the command in the terminal (one by one),
click enter to run the command, take a screenshot of the output, and then explain the purpose (the different
parameters/info of the output) of the command in your own words – Before you move to the next command.
The ls commands we would like to try are:
After you open folders and sub-folders, you may want to know where you are within the filesystem (e.g.,
/Downloads/Assignments/Assignment3). â€œpwdâ€ -which stands for Print Working Directory- is used to display the
path of the working directory (where are you in the system). Type the command in the terminal, click enter to run, and
take a screenshot of the output.
Using the Windows graphical interface, you can double-click to open a folder or click the back button to return to the
parent folder. Through the terminal, we have an essential command called â€œcdâ€ -which stands for the Change
After you run the ls command, you will find the different file(s) and sub-folder(s). Let us assume you find a sub-folder
named Folder_M (this is just a name, so try one of the folders you find after your run ls).
To open Folder_M, try:
To return to the parent directory, try:
For each of these two cd commands: Type the command in the terminal, run the â€œpwdâ€ command, then the â€œlsâ€
command, and take a screenshot of the output.
Part II (7 points â€“ 3.5 points per proble