Concatenation problem

Newbie question. I have a text file with a bunch of urls that look, let's say, like this:
yahoo/Business_%26_Finance/Stocks_A/index.html

I need to add a "prefix" and "suffix" so was doing this:

datafile.readlines.each {|url|

companyURL = "http://".concat(url.to_s).concat("?off=1")
puts companyURL
}

But the result has a line break in it before the "suffix"

http://yahoo/Business_%26_Finance/Stocks_A/index.html
?off=1

How do I get it to concatenate into one line?
TIA

The operator/method you are looking for is chomp. See the following example:

It is due to that fact that when you read a line in from user or file you get the newline (\n) with it.
What makes this kind of tricky in ruby (and I find it to be particularly pesky) is that puts is nice enough to strip that newline for you if it is at the end of your string. So if you try to debug this problem by tracer bullets (outputting to console) it magically disappears.

Thanks!
I just figured out that .strip was working also but I was still clueless as to why I wasn't seeing the problem. Now I get it!