Environment Commands

Configure Go's build environment with GOPATH, GOROOT, GOPROXY, and other environment variables. Understand how Go resolves modules and where it stores downloaded packages.

6 commands

Pro Tips

Use 'go env GOPATH' to see where Go stores downloaded modules. Default: ~/go.

Set 'GOPROXY=https://proxy.golang.org,direct' for faster downloads and availability when repos go offline.

Use 'go env -w GOBIN=~/bin' to persist environment settings without modifying shell config.

Common Mistakes

GOPATH and module mode don't mix well. Use modules (go.mod) for all new projects — GOPATH mode is legacy.

Setting GONOSUMCHECK or GONOSUMDB disables integrity verification. Only use for private modules behind GOPRIVATE.

Commands

Show all env vars

$ go env

Display all Go environment variables.

Get specific env var

$ go env GOPATH

Show specific environment variable.

Set env var persistently

$ go env -w GOPROXY=https://proxy.golang.org,direct

Set Go environment variable permanently.

Set private modules

$ go env -w GOPRIVATE=github.com/myorg/*

Configure private modules (bypass proxy).

Disable CGO

$ CGO_ENABLED=0 go build

Build without C bindings for static binary.

Output as JSON

$ go env -json

Show environment as JSON.