Hi
I have to update string pattern using sed. If I find any keyword "post" I have to add a function "yahoo" to that keyword. The keyword "post" may or may not come with some prefix too like "abc.post" or "def.post" etc or only "post". The sed must only change when word is completely matched. Like compost must remain compost only. Only post should change to yahoo(post) or abc.post to yahoo(abc.post).
Below is sample example:
Input:

Code:

Hi this is another abc.post. This post is new. Not compost. Dummy String - dbc.post.

Output Required:

Code:

Hi this is another yahoo(abc.post). This yahoo(post) is new. Not compost. Dummy String - yahoo(dbc.post).

I m trying
sed -i "s/\bpost\b/yahoo(post)/g"

but this does not takes care of abc.post, dbc.post & other similar prefix.

Thanks in advance.