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Can part of the source code of open source software be used for commercial purposes? Are there any legal issues?

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 China

Post time: 2020-3-23 18:00:01
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For example, emule, bt, I think some of these classes are very common, and I use them in programs

And if there are some third-party open source controls, I use them in the program, okay?

Are there any legal issues? Can you?

Does my own program therefore have to be open source?
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 China

Post time: 2020-7-3 09:00:01
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As long as you comply with the GNU agreement, there should be no problems.
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 Author| Post time: 2020-7-3 17:00:01
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What is the GNU agreement?
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 China

Post time: 2020-7-5 21:45:01
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Please indicate which open source software you used, and package its code in the installation package, or publish its download address, it should be no problem!
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 China

Post time: 2020-7-7 06:15:01
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四不像君, why add a "bar" at the end?
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 Korea, Republic of

Post time: 2020-7-7 15:00:01
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Haha.

That sigh
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Post time: 2020-7-7 21:15:01
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What if I borrowed his programming ideas or used several classes or functions?
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Post time: 2020-7-9 09:00:01
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If they use their code, they must comply with their agreement

Often GNU agreement
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Post time: 2020-7-16 16:00:01
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In layman's terms, you can borrow open source code to make money, but your software must also be open source, others can also use your code
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Post time: 2020-9-4 20:45:01
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There are many types of open source code pages: some have no copyright and can be used directly; some can be used for commerce, but some require your code page to be made public; some famous have copyrights and are not allowed to be used for commerce. Generally, copyrighted items are stated in the file header or download page, so just pay attention to them.
If it doesn't work, just study and understand, and write one yourself. The key functions are public, mainly the logical method you implement.
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