what does kernel do behind the scene [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. 开发者_C百科 Closed 11 years ago.

I would like to know the exact sequence of steps that the OS does, when I type simple command like "ls -l" in any directory. What actually happens behind the scene ?

I would like to know what kernel does behind the scene while executing even a simple command like this.

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You could look at an strace

strace ls -l