Dns

net_dns¶

Get the DNS server addresses for the current host. Tries a range of methods in order: scutil (macOS), resolvectl, systemd-resolve, nm-tool, nmcli, host, and finally parsing /etc/resolv.conf or /var/run/resolv.conf.

Exit codes¶

• 0: Success
• 1: Unable to determine any DNS servers

Output on stdout¶

• Comma-separated DNS server IP addresses

net_dns_resolve¶

Resolve a hostname to an IPv4 address, or reverse-resolve an IP to its hostname. Uses 'host -4' for lookups.

Arguments¶

• $1 (string): Hostname or IPv4 address to look up

Exit codes¶

• 0: Success
• 1: No argument supplied or unrecognised input

Output on stdout¶

• The resolved IP address, or the hostname from a reverse lookup