From: Love U Ruby <lists@...>
Date: 2013-02-14T20:26:14+09:00
Subject: Re: Confusion with Ruby command line options

From the
[doc](http://web.njit.edu/all_topics/Prog_Lang_Docs/html/ruby/options.html)

***-0digit =>***

*specifies the input record separator ($/) as an octal number. If no
digits given, the null character is the separator. Other switches may
follow the digits. -00 turns Ruby into paragraph mode. -0777 makes Ruby
read whole file at once as a single string, since there is no legal
character with that value.*

My bad! Couldn't digest it at all. So let's started to play with it.

    C:\>ruby -0777 -e 'a= gets; puts a '
    Hi, This is Ram.
    Could you help me here?
    ^Z #~~~> pressed ENTER here after CTRL+Z and got the output as
below-
    Hi, This is Ram.
    Could you help me here?
    C:\>ruby #~~~> return the prompt

    C:\>ruby -000 -e 'a= gets; puts a '
    Hi, This is Ram.
    Could you help me here?
    ^Z #~~~> pressed ENTER here after CTRL+Z and got the output as
below-
    Hi, This is Ram.
    Could you help me here?
    C:\>ruby #~~~> return the prompt

    C:\>ruby -00 -e 'a= gets; puts a '
    Hi, This is Ram.
    Could you help me here? #~~~> pressed ENTER
    #~~~> pressed ENTER here and got the output as below-
    Hi, This is Ram.
    Could you help me here?
    C:\>ruby #~~~> return the prompt

Can I set such `octal` or `$/` to as below ?



    carraige return (\r)
    tab (\t)

If so, Can I have one example for each to see their behaviours?

I also tried to print the value of `"$/"` and nothing printed. So how
should I see that?

    C:\>ruby -00 -e 'a= gets; puts a ;puts "here is: #{$/}"'
    hi

    hi

    here is:


    C:\>ruby -0777 -e 'a= gets; puts a ;puts "here is: #{$/}"'
    Hey! Arjun
    Are you going school?

    ^Z
    Hey! Arjun
    Are you going school?

    here is:

    C:\>

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