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End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

Random.bytes

Random.bytes(size) → string

Returns a random binary string. The argument size specifies the length of the returned string.

See also #bytes .new .new_seed also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1