Protecting Your Files - umask

• Command syntax:

  host% umask value
  

• Octal values deny access privileges

  1 x 4 r 7 rwx
  
  2 w 5 rx
  3 wx 6 rw
• default value 22 Group and Others have
  no write permission.
• most restrictive 77 Group and Others have
  no permissions.

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