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bash format "cat" output

I'm using the --colorsel option from Xdialog and giving the output to a variable using the "cat" function.
what's happening is the Xdialog program is letting the user select a color.
Then I assigned this to a file using 2>"FILE" then I'm using the cat function to read this file into a variable. Then I echo the variable and....

The output looks like this:
244 122 255

but I need it to look like this:
244, 122, 255

Is there a way to get it to read untill a space is encountered and then assign this a variable, then read untill the next space is encountered....ext...ext....?

anyone know how to do this?
thanks in advance!!

You could probably pipe the output through either sed or awk to search for <space> and replace that with <comma><space>.
Use google to search for sed and awk examples.

Thanks Alot!!!!
I ended up using awk.
Here's what I had to do:

Code:

DIALOG=Xdialog

$DIALOG --rc-file $SKIN --colorsel "Select A Color" 0 0 2>/tmp/checklist-audiotools.tmp.$$

COLOR1a=`awk '{ printf $1 }' /tmp/checklist-audiotools.tmp.$$`

COLOR1b=`awk '{ printf $2 }' /tmp/checklist-audiotools.tmp.$$`

COLOR1c=`awk '{ printf $3 }' /tmp/checklist-audiotools.tmp.$$`

rm -f /tmp/checklist-audiotools.tmp.$$

COLOR1="{ $COLOR1a, $COLOR1b, $COLOR1c}"

Look at THIS thread.