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instance method

Pathname#truncate

(::Integer length) -> 0

truncate(size) → 0

# File tmp/rubies/ruby-4.1.0-preview1/pathname_builtin.rb, line 1965
def truncate(length) File.truncate(@path, length) end

Adjusts the size of file at the path in self to the given size:

Example

pn = Pathname('/tmp/t.tmp')
pn.write('0123456789')
pn.read   # => "0123456789"
pn.truncate(5)
pn.read   # => "01234"

Pads with null characters if necessary:

Example

pn.truncate(10)
pn.read   # => "01234\u0000\u0000\u0000\u0000\u0000"
pn.delete # Clean up.

See also #to_s #unlink #to_path #utime also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0