t/bin/utee

   1 #!/usr/bin/env ruby
   2 # -*- encoding: binary -*-
   3 # tee(1) as distributed on most(all?) systems is buffered in luserspace
   4 # this only does unbuffered writes (with line-buffered input) to make
   5 # test output appear in real-time
   6 $stdin.binmode
   7 $stdout.binmode
   8 fp = File.open(ARGV.shift, "wb")
   9 $stdin.each_line do |line|
  10   fp.syswrite line
  11   $stdout.syswrite line
  12 end