How to learn
learn by practise, ask yourself a few questions
also can be used in other fields
The only way to see if you really understand something is to try it yourself.
1 What does that do?
2 How does that work?
Learning about Unix from Unix
just like search in a dictionary or on the internet
- Read the manual
- Search the manual
- Read the .h files
- follow SEE ALSO links
3 Can I try to do it?
- compare to the original
- learn more and update
4 How can I make this run better?
System calls consume time.
Minimize the number of system calls, e.g., suitable buffer size.