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开源就代表免费吗?

文章探讨了开源协议Copyleft的概念,解释了其与商业版权Copyright的区别,以及Copyleft协议的传染性特点。

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开源就代表免费吗Copyleft 算是一个谐音梗了,版权的英文是 Copyright,字面意思是复制的权利, 软件厂商通常写上 Copyright all rights reserved ,表示自己拥有该软件的全部权利,包括复制、修改、分发。开源先驱们为了表示自己与商业版权誓不两立,就取名 Copyleft ,商业版权向右,开源协议向左。有的会写成 @Copyleft – all rights reversed (所有权利颠倒) ,或者是 @Copyleft all wrongs reserved (保留所有错误)。这么看程序员喜欢谐音梗是有历史渊源的。 但是 copyleft 协议具有传染性,用到 copyleft 相关协议的软件,也必须以 copyleft 协议发布。

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