+ Memory management & demand paging
+ PS/2 Keyboard support
+ Muti-tasking and task management
-+ 47 commonly used POSIX syscall([See Appendix 1](#appendix1))
++ 50 commonly used POSIX syscall([See Appendix 1](#appendix1))
+ User Space
+ Signal
+ PCI 3.0
2. `setxattr(2)`※
2. `fgetxattr(2)`※
2. `fsetxattr(2)`※
-2. `ioctl(2)`※
+2. `ioctl(2)`
2. `getpgid(2)`
2. `setpgid(2)`
+2. `mmap(2)`
+2. `munmap(2)`
+2. `execve(2)`※
**LunaixOS**