Select Code to Download

IDa,foo1,100,100,0
IDa,foo2,200,301,101
...
IDd,foo2,200,301,101
IDd,foo3,300,301,1
IDd,foo4,400,400,0

grep -v ",0$" dataset.dat | awk -F',' '{print $2}' | sort | uniq

foo2
foo3
foo4