### Linux Command Practice Questions$1.**$Display the current directory.$**2.**$Display the current username.$**3.**$Create a directory called Projects.$**4.**$Without moving from the current directory, create a file called README.md in the Projects directory.$**5.**$Using one command, create a file called notes.txt and write the following into the file: These are my notes:.$**6.**$Change to the Projects directory.$**7.**$Change to the $/$var directory.$**8.**$List all files and directories with their detailed information from the $/$var directory.$**9.**$Change to the home directory without using a pathname.$**10.**$Change to the $/$usr directory without using a pathname.$**11.**$List all directories, files, and hidden files with all their detailed information from your home directory without using a pathname.$**12.**$Using the ~ symbol, create the following directories in your home directory in one command: dirA and dirB$/$dirC$.$ dirC is a subdirectory of dirB.$**13.**$Using the adduser command, create a user john with the full name John Doe and password j$1234,$ leaving other parameters empty.$**14.**$Using the adduser command, create a user jane with the full name Jane Smith and password j$4321,$ leaving other parameters empty.$**15.**$Display the last $4$ users information from the $/$etc$/$passwd file.$**16.**$Display the first $4$ groups information from the $/$etc$/$group file.$**17.**$Display the last $2$ users information from the $/$etc$/$shadow file.$**18.**$Copy the notes.txt file and the Projects directory from your home directory into Johns home directory without using the homes pathname.$**19.**$Delete the notes.txt file from Johns directory.$**20.**$Change Johns other parameter to engineering and Work phone parameter to $0987654321$ using one command.$**21.**$Switch to the root user.$**22.**$As the root user, change the password of user jane to securepass$.**23.**$Add user jane to Johns group.$**24.**$Add user jane to the sudo group.$**25.**$Switch to user jane and change to Janes home directory without using the home pathname.$**26.**$List all files and directories $($including hidden files$)$ from Johns home directory without using the home pathname.$**27.**$Change user jane home directory to Johns home directory.$**28.**$Switch to YOUR USER account.$**29.**$Change to your home directory.$**30.**$Enter the command history $>>$ history to populate the file.$**31.**$Rename the history file to your student number.$**$### Advanced Questions$1.**$Create a script that automates the creation of a user, assigns them to a group, and sets a password.$**2.**$Write a command to find and display all files larger than $100$MB in the $/$var directory.$**3.**$Create a cron job that backs up the $/$home directory to $/$backup every day at midnight.$**4.**$Write a command to display the $10$ most recently modified files in the $/$etc directory.$**5.**$Create a symbolic link to the $/$usr$/$local$/$bin directory in your home directory.$**6.**$Write a command to search for the string error in all log files in the $/$var$/$log directory and display the results.$**7.**$Create a script that monitors disk usage and sends an email alert if usage exceeds $80\%.**8.**$Write a command to list all installed packages on the system and save the output to a file called packages$\_$list.txt$.**9.**$Create a script that checks if a specific service $($e$.$g$.,$ nginx$)$ is running and restarts it if it is not.$**10.**$Write a command to display the IP addresses of all network interfaces on the system.$**---$