Answer: Every file and directory in Linux are assigned three types of owners namely 'User', 'Group', and 'Others'. 

The three kinds of permissions defined for all the three owners are:

  • Read: This permission allows you to open and read the file as well as list the contents of the directory.
  • Write: This permission allows you to modify the contents of the file as well as allows adding, removing and renaming files stored in the directories.
  • Execute: Users can access and run the file in the directory. You cannot run a file unless the execute permission is set.
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