File1:
----------------------------
apples,pears,bananas,oranges,grapefruit,watermelon,pineapple
epples,pears,bananas,oranges,grapefruit,watermelon,pineapple
epples,paars,bananas,oranges,grapefruit,watermelon,pineapple
graby,epples,bananas,oranges,grapefruit,watermelon,pineapple


File2:
----------------------------
pearsrs,apples,bananers,orangas,grapefruit,graby,pineapples
apples,pears,bandanas,orangatangs,grapefruit,watermelon,wineapple



Wanted output: (File1: appended: only add records when fields 1, 2, 5 and 6 DO NOT match)
-----------------------------
apples,pears,bananas,oranges,grapefruit,watermelon,pineapple
epples,pears,bananas,oranges,grapefruit,watermelon,pineapple
epples,paars,bananas,oranges,grapefruit,watermelon,pineapple
graby,epples,bananas,oranges,grapefruit,watermelon,pineapple
pearsrs,apples,bananers,orangas,grapefruit,graby,pineapples