read line from a file and check the string
 

hi,

i am having the output in file like below. i need to validate line by line and check the string is same or not.

output file

mango
orange
apple

if first line is mango and second is orange and third is apple
then i need to give the message success

else

any one of the string is wrong then it is not success.

how can i do this in shell scripting.. please help...

homework eh?

look at man sort, man uniq

Of not homework and you are actually stuck, show us what you have tried?