# English text with newlines. text = <<~EOT

First line
Second line

Fourth line
Fifth line

EOT

# Russian text. russian = “u{442 435 441 442}” # => “тест”

# Binary data. data = “u9990u9991u9992u9993u9994”

# Text file. File.write(‘t.txt’, text)

# File with Russian text. File.write(‘t.rus’, russian)

# File with binary data. f = File.new(‘t.dat’, ‘wb:UTF-16’) f.write(data) f.close