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module Utils
def self.popen_read(*args, &block)
popen(args, "rb", &block)
end
def self.popen_write(*args, &block)
popen(args, "wb", &block)
end
def self.popen(args, mode)
IO.popen("-", mode) do |pipe|
if pipe
return pipe.read unless block_given?
yield pipe
else
$stderr.reopen("/dev/null", "w")
exec(*args)
end
end
end
end
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