Question

How can I extract two fields from a given file “named.conf”? I want the fields ‘zone’ and ‘file’.

zone "example.com" IN {
        type master;
        file "db.example.com";
        allow-query { any; };
        allow-update { none; };
        allow-transfer { 10.101.100.2; };
};

Answer 1

This might work for you:

sed '/^\s*\(zone\|file\) "\([^"]*\)".*/,//!d;//!d;s//\2/' named.conf
example.com
db.example.com