Replace comma with newline in sed on MacOS?

Question

I have a file of id\'s that are comma separated. I\'m trying to replace the commas with a new line. I\'ve tried:

sed \'s/,/\\n/g\' file

b

Answer 1

Apparently \r is the key!

$ sed 's/, /\r/g' file3.txt > file4.txt

Transformed this:

ABFS, AIRM, AMED, BOSC, CALI, ECPG, FRGI, GERN, GTIV, HSON, IQNT, JRCC, LTRE,
MACK, MIDD, NKTR, NPSP, PME, PTIX, REFR, RSOL, UBNT, UPI, YONG, ZEUS

To this:

ABFS
AIRM
AMED
BOSC
CALI
ECPG
FRGI
GERN
GTIV
HSON
IQNT
JRCC
LTRE
MACK
MIDD
NKTR
NPSP
PME
PTIX
REFR
RSOL
UBNT
UPI
YONG
ZEUS