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go env ：查看终端运行环境
PS H:\go_workspace> go env
set GO111MODULE=on
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\Administrator\AppData\Local\go-build
set GOENV=C:\Users\Administrator\AppData\Roaming\go\env
set GOEXE=.exe
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=Windows/">windows
set GOINSECURE=
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=H:\go_workspace
set GOPRIVATE=
set GOPROXY=https://goproxy.cn,direct
set GOROOT=E:\go
set GOSUMDB=sum.golang.org
set GOTMPDIR=
set GOTOOLDIR=E:\go\pkg\tool\windows_amd64
set GCCGO=gccgo
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=NUL
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\ADMINI~1\AppData\Local\Temp\go-build672771602=/tmp/go-build -gno-record-gcc-switches
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go help env ：查看 go env 帮助命令
PS H:\go_workspace> go help env
usage: go env [-json] [-u] [-w] [var ...]
Env prints Go environment information.
By default env prints information as a shell script
(on Windows, a batch file). If one or more variable
names is given as arguments, env prints the value of
each named variable on its own line.
The -json flag prints the environment in JSON format
instead of as a shell script.
The -u flag requires one or more arguments and unsets
the default setting for the named environment variables,
if one has been set with 'go env -w'.
The -w flag requires one or more arguments of the
form NAME=VALUE and changes the default settings
of the named environment variables to the given values.
For more about environment variables, see 'go help environment'.
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go env xxx ：查看指定配置
PS H:\go_workspace> go env GOPATH
H:\go_workspace
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一个与时俱进的Go编程知识库。
