⑤ If you want to start your own business and make physical products as an engineer, if you have money, you don’t need to learn any technology, and if you don’t have money, you still want to
To make products, you have to learn the bottom layer of Linux.
⑥ People who make Linux APP, yes, they also need to learn.
These people don’t need to go in-depth, just have a general understanding: bootloader is used to start the kernel, Linux file system (what is the first program, what does it do, and what are each directories used for), APP and driver The calling relationship and tool chain are enough if you have this concept
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