7.3 Exercise |
- Please change the owner of /bin/vi file into ourselves and restore it.
- Please change the belonging group of /sbin/fsck file into user and restore it.
- Please change the directory permission of /var/tmp into 700 and restore it.
- Please become root user, and set setuid bit and setgid bit to /sbin/fdisk, and became a general user, and execute it with -l option.
- Please become root user again, and clear setuid bit and setgid bit from /sbin/fdisk.
