* Lab1_A which contains the xv6 version with process tracing* Lab1_B which contains the xv6 version with halt system call implemented* Lab2 which contains the xv6 version with Big data file implemented* Lab4 which contains the xv6 version with shmget system call

to run the Lab1_A version-:

* run `make`* run `make qemu`it will list the system call name and its return valueNOTE:The files i changed:* syscall.c

to run the Lab1_B version-:

* run `make`* run `make qemu`* run `halt` to run the halt system callNOTE:The files i changed:* Makefile* Created halt.c* sysproc.c* syscall.h* syscall.c* user.h* usys.S* defs.h

to run the Lab4 version-:

* run `make`* run `make qemu`* run `shm_get` to run the shm_get system callNOTE:The files i changed:* Makefile* defs.h* proc.c* proc.h* syscall.c* syscall.h* sysproc.h* sysproc.c* created shm_get.c* user.h* usys.S* vm.c

to run the Lab2 version-:

* run `make`* run `make qemu`* run `big *`NOTE:The files i changed:* Makefile* mkfs.c* fs.c* fs.h* param.h* created big.c