Write a bash script createDirectories.sh that when the script is executed with three given arguments (one is directory name and second is start number of directories and third is the end number of directories ) it creates specified number of directories with a dynamic directory name.

Create a Script to backup all your work done till now.

Read about Cron and Crontab, to automate the backup script.

Cron is a time-based job scheduler that allows users to schedule tasks to run automatically at specific times or intervals, without the need for manual intervention. These scheduled tasks are known as cron jobs.

Crontab is a file used to store the list of commands or scripts that are scheduled to run at specific times using the Cron utility.

To create or edit the crontab file, you can use the "crontab" command followed by specific options and arguments, such as:

• "crontab -e" to edit the current user's crontab file.

• "crontab -l" to list the current user's crontab file.

• "crontab -r" to remove the current user's crontab file.

• "crontab -u" to modify the crontab file for a specific user.

  

  Crontab is a powerful tool that allows you to automate repetitive tasks and improve system efficiency.

  Read about User Management.

  User management in Linux refers to the process of creating, modifying, and deleting user accounts on a Linux system. It also involves setting user permissions and access controls and managing user passwords.

  To create a user account

  useradd Afsha

  To check user account properties

  sudo cat /etc/passwd

  To create a user account password

  passwd Afsha

  For switching user account

  su Afsha

  To delete a user account

  userdel Afsha

  To add a group account

  groupadd devops

  To check group account property

  sudo cat /etc/group

  To delete the group account

  groupdel devops

  To add a single member to a group

  gpasswd -a Afsha devops

  To add multiple members to a group

  gpasswd -M kajal,amreen,tash devops

  Create 2 users and just display their Usernames.

  

  Thank you for reading this article!