How to use tr in pipeline?

Question

Input file:

ID_REF,GSM2819484,GSM2819485,GSM2819486,GSM2819487,GSM2819488,GSM2819489,GSM2819490,GSM2819491,GSM2819492,GSM2819493

My code:

awk -F, '{$1="";print substr($0,2)}’  | tr  ' ' '\n' > result

tr is the one giving the issue. How can I use tr in a pipeline?

Expected output:

GSM2819484
GSM2819485
GSM2819486
GSM2819487
GSM2819488
GSM2819489
GSM2819490
GSM2819491
GSM2819492
GSM2819493

Answer 1

It looks simpler to just use tr from the get go and then filter the first line using tail like this:

echo "ID_REF,GSM2819484,GSM2819485,GSM2819486,GSM2819487,GSM2819488,GSM2819489,GSM2819490,GSM2819491,GSM2819492,GSM2819493" | tr ',' '\n' | tail -n+2

But as far as I can tell, there is nothing wrong with your command except the ’ at the end of the awk command should be an '.

awk -F, '{$1="";print substr($0,2)}’  | tr  ' ' '\n' > result
                                   ^ this should be '

With the correct character there your command also works for me!