I have a problem in terminal commands

[clever_ashwin]

 :)Hello
I am a newbie to linux i am using Fedora core 2
Please can anyone tell me the command to replace a word form a file with another wordLike for example a file contains word this and i want to replace that word with another word the.

Pls help

[Peeyush Maurya]

which terminal file editor are you using?

if you are using vi ..then try following
http://unix.t-a-y-l-o-r.com/VBsr.html


Regards
Peeyush Maurya