linux - Need help in file filtering -


i have list of host names in file , 1 more file complete host names details in file b.i want remove hosts matches hosts in b file.any short script this?please let me know.

ex: 

cat  server1 server2 server3 server4   cat b server700 server1 server300 server4

so here in , b ,server1 , server4 matching,so need script removes matching servers names fromb in file

something on these lines might out. adjust regular expression on grep command sure match hostnames on details file:

cat file_with_hostnames | while read hname; grep -q "$hname" file_with_host_details || echo $hname; done

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