Bash Shell Scripting- For loop with arrays

The video tutorial covers the basics of using for loops in bash scripting, including variable substitution and using arrays. It demonstrates creating a shell script to monitor services like Docker and Nginx, sending email alerts if services are down, and automating the process using cron jobs.

What is the purpose of using a variable in a for loop?

• To define the end of the loop

• To execute the loop multiple times

• To hold each value from the list being iterated

• To store the loop's syntax

What command is used to provide execution permission to a shell script?

• chattr

• chmod

• chown

• chgrp

How can you comment out multiple lines in a shell script?

• Using /* and */

• Using

• Using //

• Using # at the start of each line

What is the benefit of using arrays in a shell script?

• To execute scripts faster

• To reduce the number of lines in a script

• To make scripts more secure

• To store multiple values in a single variable

Which command is used to check the status of a service in Linux?

• check service

• systemctl status

• status service

• service status

What does an exit status of zero indicate in a shell script?

• The script has an error

• The script is incomplete

• The service is not running

• The service is running

What is the purpose of using the mail command in a shell script?

• To schedule tasks

• To send alerts via email

• To log errors

• To execute scripts remotely

Why is it important to use the full path for commands in a cron job?

• To avoid syntax errors

• To improve security

• To make the script run faster

• To ensure the command executes correctly

What is the function of the crontab command?

• To monitor system performance

• To manage user permissions

• To schedule recurring tasks

• To edit shell scripts

How often does a cron job run with the syntax '*****'?

• Every hour

• Every day

• Every minute

• Every week