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fd juggling added by evhan on Thu Aug 17 03:56:53 2017

(use posix)
(define 1* (duplicate-fileno 1))                        ; save original stdout
(system "echo 1")
(duplicate-fileno (file-open "/dev/null" open/write) 1) ; redirect stdout to /dev/null
(system "echo 2")
(duplicate-fileno 1* 1)                                 ; restore original stdout
(system "echo 3")

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   _       _    _               
  (_)_   _| | _| |__  ___  __ _ 
  | | | | | |/ / '_ \/ __|/ _` |
  | | |_| |   <| |_) \__ \ (_| |
 _/ |\__, |_|\_\_.__/|___/\__, |
|__/ |___/                   |_|
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