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How to print on a console (terminal) inside a system call

how can i print something (for debugging purpose) for the console inside linux system call?

Or is there some kind of not-so-convenient way to debug kernel code?

thank

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2 answers

The accepted method of printing inside the kernel is through printk().

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You should also check various modifiers on printk (for example, KERNEL_DEBUG), which will control where / how messages are printed, including whether they are printed on all active terminals or only in the system buffer

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Source: https://habr.com/ru/post/1772821/

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