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"go env" prints Go environment information as a shell script format by default but it's difficult for some tools (e.g. editor packages) to interpret it. The -json flag prints the environment in JSON format which can be easily interpreted by a lot of tools. $ go env -json { "CC": "gcc", "CGO_CFLAGS": "-g -O2", "CGO_CPPFLAGS": "", "CGO_CXXFLAGS": "-g -O2", "CGO_ENABLED": "1", "CGO_FFLAGS": "-g -O2", "CGO_LDFLAGS": "-g -O2", "CXX": "g++", "GCCGO": "gccgo", "GOARCH": "amd64", "GOBIN": "/home/haya14busa/go/bin", "GOEXE": "", "GOGCCFLAGS": "-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build498013955=/tmp/go-build -gno-record-gcc-switches", "GOHOSTARCH": "amd64", "GOHOSTOS": "linux", "GOOS": "linux", "GOPATH": "/home/haya14busa", "GORACE": "", "GOROOT": "/home/haya14busa/src/go.googlesource.com/go", "GOTOOLDIR": "/home/haya14busa/src/go.googlesource.com/go/pkg/tool/linux_amd64", "PKG_CONFIG": "pkg-config" } Also, it supports arguments with -json flag. $ go env -json GOROOT GOPATH GOBIN { "GOBIN": "/home/haya14busa/go/bin", "GOPATH": "/home/haya14busa", "GOROOT": "/home/haya14busa/src/go.googlesource.com/go" } Fixes golang#12567 Change-Id: I75db3780f14a8ab8c7fa58cc3c9cc488ef7b66a1 Reviewed-on: https://go-review.googlesource.com/38757 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
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