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# install dig
## archlinux
sudo pacman -S ldns

## cenos
yum install bind-utils

# install drill
#ubuntu
sudo apt install ldnsutils
#alpine
apk add drill

dig +trace wiloon.com
dirll -T wiloon.com

drill wiloon.com @192.168.50.1
drill wangyue.dev NS

dig，其实是一个缩写，即Domain Information Groper。

dig @8.8.8.8 www.baidu.com A //命令格式为dig @dnsserver name querytype

https://www.archlinux.org/todo/dnsutils-to-ldns-migration/

http://imdjh.github.io/toolchain/2015/10/07/drill-if-you-can-dig-if-you-have-to.html

We are removing dnsutils from [core]. (It cannot be built independently from bind anymore, and the whole thing is becoming a mess anyhow.)

Please update your packages to depend on ldns instead (already in [core]).

While dnsutils provided three similar DNS query tools (dig, host, nslookup), ldns provides drill, a near-drop-in replacement for dig (which can therefore easily replace host and nslookup too). To update, you must replace all calls to dig/host/nslookup in your packages to calls to drill. Simple calls such as dig archlinux.org can simply be rewritten as drill archlinux.org; see drill -h for more details and please contact me if you cannot figure out how to migrate.

<a href="http://roclinux.cn/?p=2449">《dig挖出DNS的秘密》-linux命令五分钟系列之三十四</a>

http://roclinux.cn/?p=2449&embed=true#?secret=9AchPRSDEE