Shulou(Shulou.com)06/02 Report--

Search in resolv.conf is mainly used to complete hostname. Sometimes the domain name is too long and can be used as a short domain name as host name, but FQDN is needed for DNS resolution, and setting search in resolv.conf can complete it.

Vim / etc/hosts

42.120.7.71 www

Ping www can be reached, and the returned value is 42.120.7.71. Ping will parse hosts first.

Vim / etc/resolv.conf

Search firefoxbug.net

Nameserver 114.114.114.114

At this time, nslookup www

Server: 114.114.114.114

Address: 114.114.114.114#53

Non-authoritative answer:

Name: www.firefoxbug.net

Address: 42.120.7.71

See, the function of search is to complete the short domain name to be accessed.

The correct order for domain name resolution is:

1. Find / etc/hosts

two。 Find the domain name according to nameserver

3. If you can't find the domain name in nameserver, do search completion and go back to 1 / 2 steps.

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