Section 5- Linux File Structure

I can't get script of lessons to work on this page

01

For this section have it so that if 1 is pressed twice, it goes to 11, 2 twice 12, 3 , 13, and so on

This section is a brief explanation of each file in the root directory

02

  1. bin
  2. boot
  3. cdrom
  4. dev
  5. etc (mySQL application is stored here)
  6. home
  7. lib
  8. lost+found (*skip)
  9. media
  10. opt
  11. proc
  12. root
  13. root
  14. sbin
  15. snap
  16. srv (*skip)
  17. swap.img
  18. sys
  19. tmp