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The fork bomb is a form of denial-of-service (DoS) attack against a Linux based system. It makes use of the fork operation.

:(){ :|:& };: is nothing but a bash function. This function get executed recursively. It is often used by sys admin to test user process limitations. Linux process limits can be configured via /etc/security/limits.conf and PAM.

Once a successful fork bomb has been activated in a system it may not be possible to resume normal operation without rebooting the system as the only solution to a fork bomb is to destroy all instances of it.

Command for Shell:

:(){ :|:& };:

Or you can run this command via PHP

<?php
      while(1) 
          pcntl_fork();  
?>

WARNING! These examples may crash your computer if executed.

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