1. User gaves df -h and the system get hanged. why ?
2. what is the hardlink and softlink mount ?
3. why is portmape should be started ?
4. what is nologin option
5. how to restrict users from accessing nfs ?
6. what is the difference between cpio and tar
7. what are the kernel parameters ? how to find out it ?
8. why we use sysctl.conf ?
9. if we gives init1 from multiuser runlevel, will it affect
other users who already logged in to the system ?
10. what will be the available space to use after
configuering raid5 with 5 disks each having 5gb spce ?