Question $1[5$ points$]$

Imagine you are a junior system administrator responsible for managing a Linux server.

Your supervisor has given you various tasks related to common Linux commands. Your

goal is to demonstrate your knowledge and proficiency in using these commands to

maintain and troubleshoot the server effectively.

a$)$ Change your user account's password to "SecurePwd$123."$

b$)$ List all users currently logged into the server.

c$)$ Determine your own username and user ID $($UID$)$ on the server.

d$)$ Create a text file named "important$\_$notes.txt$"$ and write the message

"Confidential: For authorized personnel only" into the file.

e$)$ Access the manual page for the $"$Is$"$ command to learn more about its options and

usage.

f$)$ List the contents of a directory, including hidden files and directories, in long

format.

g$)$ Replace all occurrences of the letter $\text{'}$a$\text{'}$ with $\text{'}$A$\text{'}$ in a text file named "text.txt$."$

h$)$ Display the hostname of your server.

i$)$ Trace the network route from your local machine to the $\text{'}$

www$.$example.com'

server.

j$)$ Perform a basic port scan of a target server with the IP address $"10\mathrm{.}0\mathrm{.}0\mathrm{.}1."$