HI All,

I am very new in unix and i am not familiar if my requirements can be done in unix.

I need to replace a common word that exists inside thousands file,is impossible to edit one by one.

To all expert, are there any unix command that i can use to do this.
It might not be possible to do it once probably i need to creat a script but is it possible?

Do you know if there is a ready example?