file(name)
creates a digest object and reads a given file, name.
p Digest::SHA256.file("X11R6.8.2-src.tar.bz2").hexdigest # => "f02e3c85572dc9ad7cb77c2a638e3be24cc1b5bea9fdbb0b0299c9668475c534"
# File ext/digest/lib/digest.rb, line 28 def self.file(name) new.file(name) end