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Changing the Permissions on a File

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class File
  U_R = 0400
  U_W = 0200
  U_X = 0100
  G_R = 0040
  G_W = 0020
  G_X = 0010
  O_R = 0004
  O_W = 0002
  O_X = 0001

  A_R = 0444
  A_W = 0222
  A_X = 0111
end

open('my_file', 'w') {}

File.chmod(File::U_R | File::U_W | File::G_R | File::O_R, 'my_file')
File.chmod(File::A_R | File::U_W, 'my_file')
File.chmod(0644, 'my_file')                   # Bitmap: 110001001

标签:Ruby,文件

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