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close_on_exec? 

        # IO.close_on_exec?

(from ruby core)
---
    ios.close_on_exec?   -> true or false

---

Returns `true` if *ios* will be closed on exec.

    f = open("/dev/null")
    f.close_on_exec?                 #=> false
    f.close_on_exec = true
    f.close_on_exec?                 #=> true
    f.close_on_exec = false
    f.close_on_exec?                 #=> false

This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.