Linux Labs· Identity and AccessLab 11 of 37

Permissions, umask, and Sticky Directories

A payroll file is world-writable and a shared scratch directory lets anyone delete anyone's work. Fix both with plain Unix permissions and understand what each bit actually does.

  • Beginner
  • 30 min
  • Not rated yet
  • Free
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In this moduleIdentity and Access

  1. User Account Lifecycle30 min
  2. Groups and Shared Project Directories30 min
  3. Permissions, umask, and Sticky DirectoriesYou are here
  4. Access Control Lists and Inheritance35 min
  5. Delegate a Narrowly Scoped sudo Action35 min
  6. Repair SELinux File Contexts30 min