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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 ?
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how u use the iptable firewall to restrict ssh,telnet,ftp
When you install RedHat what is the kernel mode ? What is kernel compilation / upgrade ?
What command can you use to review boot messages?
What is the other method of installing Linux O.S other than Text, GUI mode? Why we prefer that for installation of Linux in Real time?
plz mention some interesting problems you faced and how you solved it?
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I want to send pop-up message to samba users when they access the shared folder.... for eg: i want to tell them (dont copy mp3 and video files)
Linux Commands 
