This is the list of NIS maps for which compiled-in default search
filters and key and value format specifiers are currently known:

    passwd.byname
    passwd.byuid
    shadow.byname
    passwd.adjunct.byname
    group.byname
    group.bygid
    netgroup
    auto.*
    ethers.byaddr
    ethers.byname
    hosts.byaddr
    hosts.byname
    mail.aliases
    mail.byaddr
    netgroup.byhost
    netgroup.byuser
    netid.byname
    networks.byaddr
    networks.byname
    protocols.byname
    protocols.bynumber
    rpc.byname
    rpc.bynumber
    services.byname
    services.byservicename
    ypservers