NAME
  chmod - change the file modes

SYNOPSIS
  chmod [-R] mode file...

DESCRIPTION
  The chmod utility shall change any or all of the file mode bits of the file
  named by each file operand in the way specified by the mode operandself.

  Only
  a process whose effective user ID matches the user ID of the file, or a process
  with appropriate privileges, shall be permitted to change the file mode bits of
  a file.

OPERANDS
  mode  Represents the change to be made to the file mode bits of each file
        named by one of the file operands
  file  A pathname of a file whose file mode bits shall be modified.

OPTIONS
  -R  Recursively change file mode bits.