what does kernel do behind the scene
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.
what does kernel do behind the scene
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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.