Hi,
I have a few questions to be answered.Please help me out in this.Its urgent.

1) what does ' $* ' mean, what does it do ?
2) Command to change UNIX Password.
3) What is Daemon processes ?
4) How do u execute a Unix command or process in the background ?
5) What is nohup ?
6) Difference between softlink and hardlink ?
7) Command to display space usage on a UNIX file system ?
8) How would you change alloccurances of a value using VI ?

please help.

cheers.