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BTW - why do we need the "+ 0"?
is this to protect lines that have only CLICK but don't have CONV?

OMG - You are a genius!!!
Thanks so much!

Hi Gurus,
I'm scratching my head over and over and couldn't find the the right way to compose this AWK properly - PLEASE HELP :confused:

Input:
c,d,e,CLICK
a,b,c,CLICK
a,b,c,CONV
c,d,e,CLICK...

There's most likely a faster way, but this should do the trick:
echo "T111||T222||T444||T222||T555" |sed 's/||/\n/g' |sort -u |awk '{ printf "%s ", $0 }'