The UNIX System Interface

• 8.1 program cat using read, write, open and close
• 8.2 Rewrite fopen and _fillbuf with fields
• 8.3 _flushbuf, fflush and fclose
• 8.4 implement fseek
• 8.5 inode entry
• 8.6 Write calloc, by calling malloc
• 8.7 Error checking by malloc
• 8.8 bfree maintained by malloc
• 8.2 Buffered and Unbuffered getchar
• 8.2 Read and Write
• 8.3 open and create calls