remove newlines from a file

[Paul Schmehl]

I found a sed tutorial once that did this, but I can't seem to find it again. 
I have a file with multiple lines, each of which contains a single ip followed 
by a /32 and a comma.  I want to combine all those lines into a single line by 
removing all the newline characters at the end of each line.

What's the best/most efficient way of doing that in a shell?

-- 
Paul Schmehl, Senior Infosec Analyst
As if it wasn't already obvious, my opinions
are my own and not those of my employer.
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"It is as useless to argue with those who have
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