Bash Shell Scripting- Monitor File system usage and send mail alerts

This video tutorial explains how to create a shell script to monitor file system usage. It covers setting a threshold for usage alerts, implementing the script, and automating it with cron jobs. The tutorial provides a step-by-step guide to writing the script, extracting file system data, and sending email alerts when usage exceeds the threshold. It also discusses scheduling the script to run automatically at regular intervals using cron jobs.

What is the primary purpose of the shell script discussed in the video?

• To update the system software regularly.

• To backup important files automatically.

• To monitor file system usage and send alerts.

• To delete unused files from the system.

Which command is used to check file system usage on Unix-like systems?

• ps aux

• df -h

• top

• ls -l

What is the role of the 'awk' command in the script?

• To schedule tasks.

• To delete files.

• To print specific fields from a line.

• To send email alerts.

What is the purpose of the 'sed' command in the script?

• To replace the percentage symbol with nothing.

• To sort the file systems by usage.

• To create a new file.

• To move files to a different directory.

How does the script determine if a file system's usage exceeds the threshold?

• By counting the number of files.

• By checking the file size.

• By comparing the usage percentage to a predefined threshold.

• By checking the last modified date.

What happens if a file system's usage exceeds the threshold?

• The file system is deleted.

• An email alert is sent.

• The script stops running.

• The system shuts down.

What is the function of a cron job in the context of this script?

• To send alerts to the administrator.

• To manually run the script.

• To update the script with new features.

• To automate the execution of the script at regular intervals.

Why is it important to provide the complete path for commands in a cron job?

• To prevent the script from sending emails.

• To reduce the size of the script.

• To make the script run faster.

• To ensure the commands execute correctly.

What is the significance of the 'crontab' command in the script?

• It deletes old log files.

• It schedules the script to run automatically.

• It updates the system software.

• It lists all files in a directory.

What threshold value is typically used in real-time environments for monitoring file system usage?

• 60%

• 10%

• 90%

• 30%