root@ELysia:~# mv ./girl ./my_girl
mv: cannot move '/test' to '/home/elysia/test': Permission denied
root@Elysia:~# ps -ef | grep girl
root       1800     367  0 13:27 pts/2    00:00:00 vi girl
root@Elysia:~# kill -9 1800
bash: kill: (1800) - Operation not permitted
root@Elysia:~# rm -rf /*