We need to be able to collect tree of all the files in the system. Each tree node should be able to store at least one user provided pointer to user provided data. (we'll associate arbitrary information with each tree node ex. file hash).

Also we need a set of helper functions for convenient traversal of collected FS tree.

Special handling of hard and soft links is required. It is special tree nodes that have pointers to file/dir nodes.

Use POSIX API for now.

Let's discuss library design at a whiteboard first.

To make debug version: make debug
To run under valgrind: make mem_check
To run on the test: make; bin//main <folder_name>

Changes are made in this period: 9079510...3206f66

Let's make it in form of console command
collect_file_tree path

Let's make two applications. One is client and another one is a server.

Server application is started first. Server opens socket on specific TCP port. Let's choose port #5000.
Then server listens for client connections on it.
After that client is able to connect to server. So it connects and sends some string. Server receives it and sends that string back. That's the concept of echo client and server that we want to implement.

Please create dedicated directories for client and server code. Use POSIX API for now. Target OS: Linux. Client is a command line app for now.

Create new app fs_diff in root of repository.
Use fs_tree library as a source of FS tree information.