Linux C Programming series exercises system call file IO, memory ing program write ls program, the system calls ls

Linux C Programming series exercises system call file IO, memory ing program write ls program, the system calls ls

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1.1Linux System Call exercise

1.2 simulate Linux ls program to display the tree directory

1.3 Memory sharing for simple data sharing

Linux C development is not a matter of two or three days. You need to start from the basics and write a blog to record your learning experience and encourage others.
The following is the 1.2 Program

The following is the 1.3 Program