2. You are writing a script to check disk space. Which command combination is most effective for storing and analyzing the used disk percentage?

3. Which statement is true regarding variables in shell scripting?

4. What will the following script output?
   bash

5. x=5
   y=10

   echo $((x+y))

5. Why is chmod +x script.sh necessary before executing a script directly?

A system admin wants to create a backup script that copies all .conf files from /etc to /backup and logs the time of backup.
Which of the following commands is most appropriate in the script?

7. You wrote a script with this snippet:

What would happen if the user entered a non-numeric input like "abc"?

8. A user complains that their script doesn’t respond to keyboard interrupts (Ctrl+C) during a loop. What is the best way to handle this in the script?

9. You want to display all files modified in the last 24 hours using a script. Which command best fits?

Your script processes user data from a file line by line. Which loop is best suited for this task?

What is the most efficient way to ensure a script variable is not empty before using it in a calculation?

12. What is the purpose of using double brackets [[ ... ]] instead of single brackets [ ... ] in conditionals?

13. A script is designed to accept one argument—a filename—and print "File exists" if it is present.
    Which conditional best fits?

14. You wrote a script with this loop:

Which issue might arise if no .txt files exist in the directory?

You want a script to notify the user if a directory does not exist before trying to enter it. What is the best conditional structure?

What does the -p option do when used with the read command in a shell script?

17. Which of the following best explains the use of -gt in the conditional [ $a -gt $b ]?

You are writing a script that accepts user age as input. If the user is older than 17, it should print "You are eligible". Which script fragment works correctly?

You want to prompt the user for their name and store it in a variable. Which is the most appropriate line?

20. A script runs the following:

21. What should the user avoid doing to prevent a script error?

You are troubleshooting system boot issues. Which directory should you inspect for essential boot-related files?

A Linux user is complaining that their GUI is consuming too much RAM on an old PC. As an administrator, which environment would you recommend switching to?

You are asked to configure a multi-user server. Each user should have isolated space to store personal files. Which directory will you configure for this?

Which combination of commands allows a user to create a directory, move into it, and confirm the change?

A user reports that a file is missing. Before restoring from backup, which command would be best to search for all files and directories under the current folder recursively?

You are tasked to audit software in /usr/bin and /opt/bin. What does this suggest about the nature of these directories?

You need to write a command-line instruction that navigates to the parent directory from the current one. Which command would be best?

You are using a system where typing ls provides a list, but you want to know which files are directories, executables, or symbolic links. What should you do?

A colleague wants to install a new app from source code without interfering with system files. Which directory is the most appropriate installation target?

A user with limited access needs to move a file into a protected system directory. The move fails. What is the best solution to resolve this issue?

What advantage does vi have over gedit in managing remote Linux servers?

How does the Insert mode in vi differ from the Replace mode in terms of user interaction?

A user accidentally deleted 10 lines in vi.

Which command could have done that?

Why is LibreOffice Base considered useful for enterprise users?

How does the Presenter Console in LibreOffice Impress enhance presentation delivery?

While coding in vi, you want to copy the current line and the next four lines for reuse later. What command should you use?

What is the purpose of the A command in vi, and how does it differ from the i command?

How does LibreOffice Writer’s AutoComplete enhance document creation efficiency?

What would be the most efficient way in vi to delete from the current cursor position to the end of the line?

Why is vim often preferred over the original vi editor in modern Linux distributions?

The comparison [ 5 -gt "3" ] in a shell script will return an error because one operand is a string.

This condition will safely handle blank input:

The command mkdir -p /home/user/docs will throw an error if /home/user already exists.

Using a graphical user interface (GUI) for Linux system administration offers the same level of system control and scripting flexibility as the command line interface (CLI).

Placing compiled third-party applications into the /opt directory instead of /usr/bin helps maintain a cleaner and more maintainable file structure.

The man command can only be used by administrators and requires superuser privileges to display manual pages of commands.

The /proc directory contains real, physical files stored on disk that remain unchanged after rebooting the system.

LibreOffice Calc’s ability to integrate real-time data streams is especially useful for financial forecasting and live reporting.

LibreOffice Impress’s Presenter Console reduces distractions during a presentation by hiding slide notes and timers from the presenter.

In vi, the command dG deletes only the current line and leaves the rest of the file intact.