ns3:linkrabbit administrator$ brew info curl
curl: stable 7.58.0 (bottled), HEAD [keg-only]
Get a file from an HTTP, HTTPS or FTP server
https://curl.haxx.se/
/usr/local/Cellar/curl/7.51.0 (368 files, 2.6MB)
  Poured from bottle on 2016-11-21 at 15:29:25
/usr/local/Cellar/curl/7.56.1 (414 files, 3.0MB)
  Poured from bottle on 2017-11-08 at 11:37:40
/usr/local/Cellar/curl/7.58.0 (415 files, 3MB)
  Poured from bottle on 2018-02-09 at 10:38:12
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/curl.rb
==> Dependencies
Build: pkg-config ✔
Optional: openssl ✔, rtmpdump ✘, libssh2 ✘, c-ares ✘, libmetalink ✘, nghttp2 ✘
==> Options
--with-c-ares
	Build with C-Ares async DNS support
--with-gssapi
	Build with GSSAPI/Kerberos authentication support.
--with-libmetalink
	Build with libmetalink support.
--with-libssh2
	Build with scp and sftp support
--with-nghttp2
	Build with HTTP/2 support (requires OpenSSL)
--with-openssl
	Build with OpenSSL instead of Secure Transport
--with-rtmpdump
	Build with RTMP support
--HEAD
	Install HEAD version
==> Caveats
This formula is keg-only, which means it was not symlinked into /usr/local,
because macOS already provides this software and installing another version in
parallel can cause all kinds of trouble.

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

For compilers to find this software you may need to set:
    LDFLAGS:  -L/usr/local/opt/curl/lib
    CPPFLAGS: -I/usr/local/opt/curl/include
For pkg-config to find this software you may need to set:
    PKG_CONFIG_PATH: /usr/local/opt/curl/lib/pkgconfig

ns3:linkrabbit administrator$