GNU/Linux Library Commands & gcov Tool 

• Understanding gcov, identifying optimization challenges

File Handling in GNU/Linux 

• Logical view of filesystem architecture
• Key system calls used for file handling

Process Management & Kernel Structures 

• Process states, context switching, and scheduling
• Kernel data structures for process management

Linux Signals & Handlers 

• Signal processing & handling mechanisms
• Using system calls for asynchronous signal handling