Modified the code (Reduced the code lines)

[DhruvinSoni30]

Modified the code & added only one function for updating the system!

Changes proposed in this pull request:

• Describe the changes you are proposing in detail.
  Now the code has only 1 function for updating the system for all the different OS
• Explain the rationale for the changes.
  Modified the code (Reduced the code lines)
• If applicable, include screenshots or other visual aids to help explain the changes.
  N/A
• If applicable, provide instructions for testing the changes.
  N/A

Related issues:

• List any related issues or pull requests that this pull request addresses or fixes.
  N/A