dns

DNS resolution functions for shell scripting.

API

dns_lookup $hostname

Performs a DNS lookup for $hostname. The difference between this function and dns_resolve is that this version uses the operating system native DNS resolution mechanism, so hostnames like localhost resolve as expected.

#!/usr/bin/env importimport dns
# Resolve `localhost` to an IP addressdns_lookup localhost

dns_resolve $hostname [$record_type = "A"]

Performs a DNS lookup for $hostname. This function performs a DNS query, so an actual DNS record needs to exist. $record_type may be specified for the type of DNS record to query for.

#!/usr/bin/env importimport dns
# Query the `A` recordsdns_resolve import.pw
# Query the `MX` recordsdns_resolve import.pw MX

dns_reverse $ip

Performs a reverse DNS lookup on IP address $ip.

#!/usr/bin/env importimport dns
dns_reverse 8.8.8.8