Re: BUG: echo call function

[Greg Wooledge]

On Wed, Mar 04, 2015 at 11:42:19AM -0300, x Slack x Ruan wrote:
> I understand the use of ''.
>  But in this case could not be a interrupt call?
>  So it is no loop, the problem persists even if there is space between the ``.

Spaces in the command are not relevant.  You are calling yourself
recursively, in a subshell (which requires a fork), with no limit.
Eventually you will have launched so many processes that the system
crashes (or does other bad things), unless you hit a configured resource
limit first.

What you have written is a thing we call a "fork bomb".  Don't do it.