Linux Commands and Scripting Quiz

Anika is trying to secure her personal project folder on her computer. She wants to ensure that only she can read, write, and execute the files in that folder, while preventing anyone else from accessing it. What does the chmod 700 command do?

• Sets the permissions to read-only for all users.

• Gives the owner all permissions and restricts others.

• Allows anyone to execute the file.

• Deletes the file.

Dhruv is trying to understand the file permissions on his Linux system. Which command should he use to check the file permissions?

• ls -a

• ls -l

• chmod

• touch

Shaan is learning about file permissions in his computer science class. He comes across a command called umask. What is the purpose of the umask command?

• To mask user credentials.

• To set default file permissions.

• To encrypt files.

• To manage file ownership.

Aarav is trying to manage the server configuration files and needs to find all .conf files owned by root. Which command would he use?

• find / -name '*.conf' -user root

• grep -r '.conf' /root

• chmod 777 *.conf

• ls -a *.conf

Aditi is managing the server logs on her Linux machine. She wants to clean up the log files that are no longer needed. She runs the following script: bash Copy code #!/bin/bash find /var/log -type f -mtime +30 -exec rm {} \;

• Deletes all files older than 30 minutes in /var/log.

• Deletes all directories in /var/log.

• Deletes all files older than 30 days in /var/log.

• Finds and lists all files in /var/log.

Dhruv wants to ensure that only the root user can modify a sensitive configuration file on his server. Which command should he use?

• chmod 777

• chmod 600

• chmod 400

• chmod 700

Sneha wants to schedule a shell script to run daily at midnight. How can she do this?

• Use the at command.

• Add an entry to /etc/crontab.

• Use systemctl to enable it.

• Run it manually every day.

Saisha is concerned about the sensitive files on her Linux system. She wants to ensure that when she deletes a file, it is securely removed and cannot be recovered. Which option ensures secure deletion of a file in Linux?

• rm -rf

• shred -u

• chmod 000

• mv to /dev/null

Eshaan is analyzing the security logs of his company's server. He wants to use awk to help him with this task. What is the use of awk in security auditing?

• Encrypting log files.

• Extracting specific fields from logs.

• Deleting old logs.

• Compiling security scripts.

Aarush is trying to troubleshoot his server and wants to check which ports are currently open. Which command can help identify open ports on his system?

• netstat -tuln

• ps aux

• chmod 755

• find . -name "*.port"