1  # Installation
 2  ## Check your environment
 3  Prior to installing Embark, you should have the following prerequisites on your machine:
 4  #### NodeJS v8.12+ / NPM v6.4.1+
 5  ```
 6  node version
 7  > 8.12+
 8  npm version
 9  > 6.4.1
10  ```
11  If you need to update Node, please [install `nvm`](https://github.com/creationix/nvm#installation) and install/use the LTS version. macOS/Linux commands provided for you below:
12  ```
13  curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
14  nvm install --lts
15  nvm use lts
16  ```
17  #### IPFS v0.4.17+
18  ```
19  ipfs version
20  > 0.4.17+
21  ```
22  [IPFS installation instructions](https://ipfs.io/docs/install/#installing-from-a-prebuilt-package), macOS/Linux command provided for you below:
23  ```
24  tar xvfz go-ipfs.tar.gz
25  cd go-ipfs
26  ./install.sh
27  ipfs init
28  ```
29  
30  #### Go-ethereum 1.8.15+
31  ```
32  geth version
33  > 1.8.15+
34  ```
35  If you need to [install `geth`](https://github.com/ethereum/go-ethereum/wiki/Building-Ethereum), you can use the below for macOS:
36  ```
37  brew tap ethereum/ethereum
38  brew install ethereum
39  ```
40  ## Installing Embark 4.0.0-alpha
41  If you already have Embark installed, please run: 
42  ```
43  embark version
44  ```
45  
46  Make sure the version is `4.0.0-alpha.1` or greater. If it’s not, re-install Embark by running:
47  ```
48  npm install -g embark@next
49  ```
50  > Do not use sudo when installing Embark
51  
52  Re-run `embark version` to ensure we have `4.0.0-alpha.1` or higher. 
53  
54  If you have not installed Embark at all, Embark can be installed by running
55  `npm install -g embark@next` (without sudo)