Similar to TOPS-20

• 

  Chmod

  Chmod
  
• 

  Ls (UNIX)

  Ls
  
• 

  TENEX

  TENEX (operating system)
  
• 

  Unixの歴史

  History of Unix
  
• 

  Multics

  Multics
  
• 

  UNIX

  Unix
  ▲1 trends