Need to weed out a list of servers from a list of servers with unix commands
I have a list of about 400 development servers and a list of about 1500 servers which include those servers and the rest of out unix environment. What is a good way to remove the servers in the first list from the second and create a new file with only those servers? The lists are line separated - eg:
server1
server2
server3
server1
server2
server3
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