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I found these command from http://rvm.io/rvm/install

Why do we need \ in the following command?

$\curl -sSL https://get.rvm.io | bash
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  • "How to ignore aliases or functions when running a command?" -- cyberciti.biz/faq/… Commented Sep 13, 2014 at 19:51
  • Also note that piping anything directly into a shell is a huge security risk. You don't want to execute random commands without inspecting them first. Commented Sep 12, 2017 at 7:05

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Short version: This skips replacing "curl" with an alias you might have defined.

A more verbose answer you can find here: \curl ... | bash ... what's the slash for?

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