Moving text into a csv file

I did a CURL on a web page and stripped out the information I wanted and placed it inside a text file (data.txt).

Lets say it contains the following: (no comas)

John 15 65kb/sec

I am then wanting to pipe that into a master csv file.

How can I add john first, 15 second and so on.

The csv should look like this: John, 15, 65kb/sec,

is there a simple way to append and pipe it in the csv

adding the comas where the spaces are

data.txt >> masterlist.csv

Any help would be great,

James

I found the answer. For those of you dealing with the same issue I would play around with the tr command. Here is a bit of code I hope helps

tr ' ' ',' <input >output

If you want to append the data please make sure to add two greater than signs

tr ' ' ',' <input.txt >> output.csv

Thanks