Replacing words in file

Shell Programming and Scripting
1

Hello All

Probably this is very simple for you but I cant figure it out
I have to replace "No Header" with "Output Field Names"

I/P file

 
<ATTRIBUTE NAME ="Header Options" VALUE ="No Header"/>

O/P needed

 
<ATTRIBUTE NAME ="Header Options" VALUE = "Output Field Names">
2

Through Sed..

sed 's/No Header../Output Filed Names"/'  inputfile
3

through nawk

$ nawk '{sub(/No Header/,"Output Field Names")};1' infile
4

Hi michaelrozar17

Somehow

 
sed 's/No Header../Output Filed Names"/' input.txt >output.txt

is not working
There is nothing in output file

5

Do this:

Keep a copy of input.txt

sed -ie 's/No Header/Output Filed Names/g' input.txt
It will be changed in input.txt itself