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我猜 {} 扩展会导致类似
_() _ _()_&; _
但如果 BASH 大师插话并解释这些字符链接动作,我将不胜感激。
这是经典的 fork 炸弹:它定义了一个名为的函数,该函数_调用自身两次(一次在前台,一次在后台)并调用它:
_
bomb(){ bomb | bomb &}; bomb
bomb() { bomb | bomb& }; bomb
http://en.wikipedia.org/wiki/Fork_bomb