File: dir.rb

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ruby2.7 2.7.4-1%2Bdeb11u1
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# directory access
# list all files but .*/*~/*.o
dirp = Dir.open(".")
for f in dirp
  case f
  when /\A\./, /~\z/, /\.o\z/
    # do not print
  else
    print f, "\n"
  end
end
dirp.close