Hi All,
silly question that I'm sure is easy to answer for a more experienced coder...

I have a file called test.txt containing the following text...

need, to, break, this, line, into, individual, lines

using sed, I'd like to make the file look like this...

need
to
break
this
line
into
individual
lines

here's the code I've tried

#!/bin/ksh
sed "s/,/\n/" test.txt > test.new.txt

but it returns the following in test.new.txt
Addn this, line, after, every, line, with, WORD


so, my questions are...
1.) how can I make sed replace all instances of "," in a given line?
2.) how can I make sed insert newline characters instead of just the character n?

Thanks in advance!