Replacing commas in a csv file with sed for mongoimport

Question

I have a csv file and I need to replace all the commas with dots. In other words, I need only the semicolon as a separator, and the commas need to be replaced with dots. I need this in order to import the data with mongoimport. I used the sed command, but it does not replace every occurrency of comma. For example:

Zolmitriptan;6 UNITA' 2,5 MG - USO ORALE;N02CC03;33345149;ZOMIG RAPIMELT;"""2,5 MG COMPRESSE ORODISPERSIBILI"" 6 COMPRESSE IN BLISTER";ASTRAZENECA S.P.A.;17,84;20,84;;3,00;FUB

becomes this , with sed 's/\,/\./' <filename>:

Zolmitriptan;6 UNITA' 2.5 MG - USO ORALE;N02CC03;33345149;ZOMIG RAPIMELT;"""2,5 MG COMPRESSE ORODISPERSIBILI"" 6 COMPRESSE IN BLISTER";ASTRAZENECA S.P.A.;17,84;20,84;;3,00;FUB

Notice that only the first comma was replaced. What am I doing wrong?

PS. Is there a way to make mongoimport ignore the commas? (in this case I would not need the replacement)

Answer 1

I was not using the global option, so

sed 's/\,/\./g'

is now working. The question remains open for the mongoimport alternative, though!