I have a domain name in a bash variable (
$TARGET), and I want to get the IPv4 (
A record) address of it in my bash script (I also want to get the IPv6
AAAA record (if exists)), in a robust manner.
i.e. What bash/unix command will: (i) print the IP address (and only the IP address) of the DNS resolution (ii) print nothing to stdout (or non-zero exit) if there is no DNS record for that domain found (iii) allow me to choose to ask for
host "$TARGET" prints lots of human readable stuff, and I’m reluctant to parse that.
dig +short looked promising, but in some scenarios, it also prints other warning messages which I do not understand, or care about.
$ dig +short -t A "$TARGET" ;; Warning: Client COOKIE mismatch 22.214.171.124
Debian test/bookworm. Bash v5.2 (installed via apt)
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