话不多说，直接核心：
第一步：下载mongodb数据库,打开终端
终端输入：brew install mongodb
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/core).
==> New Formulae
diceware llvm@6
==> Updated Formulae
nginx ✔ git-sizer parallel
node ✔ gjs pass
sqlite ✔ glib pdftoedn
alexjs glide pdftoipe
angular-cli gocr pgrouting
anjuta grakn pixz
apache-flink grpc pmd
app-engine-java grunt-completion poppler
arangodb gtk-mac-integration postgis
aria2 help2man pre-commit
ark httpd prometheus
arp-scan hugo protobuf-swift
arpack hwloc pyinvoke
avrdude iamy pyside
avro-c ice qcachegrind
aws-shell imagemagick quicktype
awscli imagemagick@6 rtags
azure-cli immortal rust
bat ipython saxon
bazel jenkins scala
bind jerasure skaffold
black jmeter skafos
cargo-completion kerl smlnj
cash-cli kibana solr
chakra kibana@5.6 sops
chapel kotlin sourcery
circleci kubernetes-cli sphinx-doc
clang-format kubernetes-helm spotbugs
coffeescript kubernetes-service-catalog-client sqldiff
cromwell kumo sqlite-analyzer
crowdin kustomize stellar-core
crystal languagetool stunnel
dbhash libcouchbase swiftgen
diff-pdf libdazzle tcpflow
diffoscope libetpan telegraf
digdag libgda terragrunt
docker-machine-nfs libopkele tgui
dub libsoup tomcat@7
duck libuv tomcat@8
elasticsearch libwbxml twarc
elasticsearch@5.6 llnode typescript
erlang llvm unp64
erlang@19 logstash urh
eslint luaradio vala
exiftool lynis vegeta
faas-cli mame vnu
file-roller mariadb@10.2 vorbis-tools
fmsx mbedtls vte3
fn mdds wdiff
folly megatools weaver
fossil mosquitto webpack
freetds mujs wireguard-tools
frugal neko wtf
futhark nifi-registry xonsh
fzy nim yarn
gdb opam yelp-tools
geckodriver ortp youtube-dl
gedit paket zig
git-archive-all pandoc-crossref
==> Deleted Formulae
redis@2.8 submarine
==> Installing dependencies for mongodb: sqlite
==> Installing mongodb dependency: sqlite
==> Downloading https://homebrew.bintray.com/bottles/sqlite-3.25.2.high_sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring sqlite-3.25.2.high_sierra.bottle.tar.gz
==> Caveats
sqlite is keg-only, which means it was not symlinked into /usr/local,
because macOS provides an older sqlite3.
If you need to have sqlite first in your PATH run:
echo 'export PATH="/usr/local/opt/sqlite/bin:$PATH"' >> ~/.bash_profile
For compilers to find sqlite you may need to set:
export LDFLAGS="-L/usr/local/opt/sqlite/lib"
export CPPFLAGS="-I/usr/local/opt/sqlite/include"
==> Summary
🍺 /usr/local/Cellar/sqlite/3.25.2: 11 files, 3.7MB
==> Installing mongodb
==> Downloading https://homebrew.bintray.com/bottles/mongodb-4.0.2.high_sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring mongodb-4.0.2.high_sierra.bottle.tar.gz
==> Caveats
To have launchd start mongodb now and restart at login:
brew services start mongodb
Or, if you don't want/need a background service you can just run:
mongod --config /usr/local/etc/mongod.conf
==> Summary
🍺 /usr/local/Cellar/mongodb/4.0.2: 18 files, 256.6MB
==> Caveats
==> sqlite
sqlite is keg-only, which means it was not symlinked into /usr/local,
because macOS provides an older sqlite3.
If you need to have sqlite first in your PATH run:
echo 'export PATH="/usr/local/opt/sqlite/bin:$PATH"' >> ~/.bash_profile
For compilers to find sqlite you may need to set:
export LDFLAGS="-L/usr/local/opt/sqlite/lib"
export CPPFLAGS="-I/usr/local/opt/sqlite/include"
==> mongodb
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
第二步：启动数据库服务：
终端输入：brew services start mongodb
==> Tapping homebrew/services
Cloning into '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-services'...
remote: Enumerating objects: 14, done.
remote: Counting objects: 100% (14/14), done.
remote: Compressing objects: 100% (10/10), done.
remote: Total 14 (delta 0), reused 8 (delta 0), pack-reused 0
Unpacking objects: 100% (14/14), done.
Tapped 1 command (43 files, 55.7KB).
==> Successfully started `mongodb` (label: homebrew.mxcl.mongodb)
第三步：进入数据库：
终端输入：mongo
MongoDB shell version v4.0.2
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 4.0.2
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
http://docs.mongodb.org/
Questions? Try the support group
http://groups.google.com/group/mongodb-user
Server has startup warnings:
2018-09-29T16:07:00.426+0800 I CONTROL [initandlisten]
2018-09-29T16:07:00.426+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2018-09-29T16:07:00.426+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2018-09-29T16:07:00.426+0800 I CONTROL [initandlisten]
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
展示所有数据库
终端输入：show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
创建数据库：
终端输入：use shop
switched to db shop //没有数据库会自动创建
此时运行
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
发现依然没有，怎么办？创建的数据库(newdb)不在列表中。要显示数据库，需要至少插入一个文档，空的数据库是不显示出来的。
> db.shop.insert({"name":"wind"})
WriteResult({ "nInserted" : 1 })
再次
show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
shop 0.000GB
到此一个数据从下载到建库全部完成了。
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