Installing nsd on macOS with brew

brew_install_nsd.sh

$ brew install nsd
==> Installing dependencies for nsd: openssl, libevent
==> Installing nsd dependency: openssl
==> Downloading https://homebrew.bintray.com/bottles/openssl-1.0.2o_1.high_sierr
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==> Pouring openssl-1.0.2o_1.high_sierra.bottle.tar.gz
==> Caveats
A CA file has been bootstrapped using certificates from the SystemRoots
keychain. To add additional certificates (e.g. the certificates added in
the System keychain), place .pem files in
  /usr/local/etc/openssl/certs

and run
  /usr/local/opt/openssl/bin/c_rehash

This formula is keg-only, which means it was not symlinked into /usr/local,
because Apple has deprecated use of OpenSSL in favor of its own TLS and crypto libraries.

If you need to have this software first in your PATH run:
  echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile

For compilers to find this software you may need to set:
    LDFLAGS:  -L/usr/local/opt/openssl/lib
    CPPFLAGS: -I/usr/local/opt/openssl/include

==> Summary
🍺  /usr/local/Cellar/openssl/1.0.2o_1: 1,791 files, 12.3MB
==> Installing nsd dependency: libevent
==> Downloading https://homebrew.bintray.com/bottles/libevent-2.1.8.high_sierra.
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==> Pouring libevent-2.1.8.high_sierra.bottle.tar.gz
🍺  /usr/local/Cellar/libevent/2.1.8: 847 files, 2.2MB
==> Installing nsd
==> Downloading https://homebrew.bintray.com/bottles/nsd-4.1.21.high_sierra.bott
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==> Pouring nsd-4.1.21.high_sierra.bottle.tar.gz
🍺  /usr/local/Cellar/nsd/4.1.21: 14 files, 730.5KB