IN LINUX C code and please do not copy from others! Thank you!

Managing Free Memory with Linked List : write a first fit program to manage free memory using linked list as in Figure 3-6(c).

Then test your program using the following memory use pattern by printing out the linked list after each memory use or free event: there are in total 10 memory units, and the memory's use pattern is as follows: A (use 2 units) , B (use 3 units), C (use 4 units), D (free 3 units of B), E (use 1 unit), F (free 4 units of C), G (free 2 units of A) and H (use 5 units