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Common usage of dig command

install dig

apt install dnsutils
## or
yum install bind-utils

simple query

dig example.com

query with specific type

## q-type   is one of (a,any,mx,ns,soa,hinfo,axfr,txt,...) [default:a]
dig txt example.com

shorten the result

dig +short example.com

verbose the process

dig +trace example.com

specify DNS server

dig @114.114.114.114 example.com

how-dns-works.png

reference