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converting a list into a line

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# 1  
Old 04-02-2001
Hi, this is a pretty intersting problem, I would like to convert a list of words into a concatenated string of words with whitespace between each word.
e.g file list :-

convert into
hello how are you today.

What command would I use to do this?

# 2  
Old 04-02-2001
here is one trick:

tr "\n" " " < filename #displays on screen

tr "\n" " " < filename >output #redirect to a file

# 3  
Old 04-05-2001
another way to do it :

a=`cat file`
echo $a


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