为什么当我以root身份登录时，golang环境变量总是消失？我必须运行 source ~/.profile 每次我想使用它的时候，就会有一个简单的用户，而不是这样。这到底是什么问题？
安装步骤
k4@k4sec:~$ sudo apt update
k4@k4sec:~$ sudo wget https://dl.google.com/go/go1.14.2.linux-amd64.tar.gz
k4@k4sec:~$ sudo tar -C /usr/local -xzf go1.14.2.linux-amd64.tar.gz
k4@k4sec:~$ sudo echo 'PATH="$PATH:/usr/local/go/bin"' >> ~/.profile
k4@k4sec:~$ sudo echo "export PATH=$PATH:/usr/local/go/bin" >> /etc/profile
k4@k4sec:~$ source ~/.profile
k4@k4sec:~$ go version
go version go1.14.4 linux/amd64
k4@k4sec:~$ sudo -s
root@k4sec:~# go version
The program 'go' is currently not installed. You can install it by typing:
apt install golang-go
root@k4sec:~# source ~/.profile
root@k4sec:~# go version
The program 'go' is currently not installed. You can install it by typing:
apt install golang-go
root@k4sec:~# echo "export PATH=$PATH:/usr/local/go/bin" >> /etc/profile
root@k4sec:~# source ~/.profile
root@k4sec:~# go version
go version go1.14.4 linux/amd64
root@k4sec:~# exit
exit
k4@k4sec:~$ go version
go version go1.14.4 linux/amd64
k4@k4sec:~$ sudo -s
root@k4sec:~# go version
The program 'go' is currently not installed. You can install it by typing:
apt install golang-go
root@k4sec:~#
GO设想
k4@k4sec:~$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/k4/.cache/go-build"
GOENV="/home/k4/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/k4/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build611508695=/tmp/go-build -gno-record-gcc-switches"
也许你可以尝试设置环境变量，就像在这个链接中提到的那样--。https:/techknowbase.comhow-to-setup-install-golang-on-ubuntu-18-04。