Awesome but commonly unknown Linux Commands

Re:Awesome but commonly unknown Linux Commands by nosignal on Wednesday August 10, 2011 @07:45AM (#2867761)

Python sort of did too, you can use _ to access the last-returned variable in the interpreter.

    [testfunc(x) for x in testlist]

    <successful result>

    success = _

    print _

    <successful result>

It's useful when using the interpreter as a calculator, or when you're bashing out some calculation you can never remember how to do properly.

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Re:Awesome but commonly unknown Linux Commands by brettnak on Wednesday August 10, 2011 @01:31PM (#2869254)

The same thing also works in irb.

    >> "foo"
    => "foo"
    >> bar = _
    => "foo"
    >> bar
    => "foo"

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