I have a flat file (fileA) with a list of server names. And I have another file (fileB) with a list of server names plus system accounts. I want every line in fileB that its server is not referenced in fileA to be removed. fileB has hundreds of more server names than what is listed in fileA. I need to only have the server names listed in fileA to be in fileB. And of course, do not to change any of the information after the server name in fileB. Please help and let me know if you need me to clarify anything.
Sample of fileA:
Sameple of fileB: