# Installation (Golang)

### Go package

Download and install [Go](https://go.dev/doc/install). We recommend to use go v1.18.0+ to use the binary efficiency.

### Install manually

Download go version 1.18.6 [here](https://go.dev/dl/go1.18.6.darwin-amd64.tar.gz) and unzip file.

Create go-src at home directory and move downloaded file to go-src:

```bash
mkdir ~/go-src
mv ~/Download/go ~/go-src/go1.18.6
# Rename go to respective version
```

Link go-src as goroot

```
ln -s ~/go-src/go1.18.6/ ~/goroot
```

Now we will export path of go from zshrc or bashrc

```bash
vim ~/.zshrc
#or
vim ~/.bashrc 
```

Add path as below to file .bashrc or .zshrc

```bash
export GOPATH=/usr/local/go
export PATH=$PATH:$GOPATH/bin
# This variable should already exist, but if it's not we have to add it

# Below this is must have variable
export GOPATH=~/go
export GOROOT=~/goroot
export PATH=$PATH:$GOROOT/bin:$GOPATH/bin
```

Update bash file

```bash
source ~/.zshrc
# or 
source ~/.bashrc
```

#### Go version

To make sure go version is installed appropriately type

```bash
go version
# go version go1.18.6 darwin/amd64 <-- or maybe different but we focus only version of go
```

### Google cloud utils

In order to download chain binary you need to install gsutil [here](https://cloud.google.com/storage/docs/gsutil_install).


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