I have a list of email addresses in one file, each on its own line. I'm trying to output them to another file as a list separated by commas. Here is the code in question. It gives me the email address separated by commas like I want, but it also throws in a "^M" after each address. Like: addr1@blah.edu^M,addr2@blah.edu^M,addr3@blah.edu^M,... When I change that comma in the code to a newline character, the "^M" disappears. Any idea on why it's doing this?

Nevermind, good old dos2unix fixed it. (doh!)