// MongoDBの例
$ brew install mongodb
==> Downloading https://homebrew.bintray.com/bottles/mongodb-3.2.11.sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring mongodb-3.2.11.sierra.bottle.tar.gz
==> Caveats
To have launchd start mongodb now and restart at login:
  brew services start mongodb
Or, if you don't want/need a background service you can just run:
  mongod --config /usr/local/etc/mongod.conf
==> Summary
🍺  /usr/local/Cellar/mongodb/3.2.11: 18 files, 245.4M

$ brew services start mongodb
==> Tapping homebrew/services
Cloning into '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-services'...
remote: Counting objects: 10, done.
remote: Compressing objects: 100% (7/7), done.
remote: Total 10 (delta 0), reused 6 (delta 0), pack-reused 0
Unpacking objects: 100% (10/10), done.
Tapped 0 formulae (37 files, 46.8K)
==> Successfully started `mongodb` (label: homebrew.mxcl.mongodb)

$ ps aux | grep mongo
takahiro      5468   0.2  0.2  2584528  25672   ??  S    11:24PM   0:00.22 /usr/local/opt/mongodb/bin/mongod --config /usr/local/etc/mongod.conf
takahiro      5472   0.0  0.0  2432804   1924 s000  S+   11:24PM   0:00.00 grep mongo