from: https://dev.to/aurelievache/learning-go-by-examples-part-3-create-a-cli-app-in-go-1h43

1. go mod init github.com/tsemach/go-gopher-cli
2. go get -u github.com/spf13/cobra@latest
3. go install github.com/spf13/cobra-cli@latest

• cobra-cli installed on ~/go/bin if $GOPATH is not defined

4. init cobra by: cobra-cli init

5. get viper package: go get github.com/spf13/viper@v1.8.1

6. cobra-cli add get

7. cobra-cli add unit

8. cobra-cli add install -p unit

9. go install: this command create an executable in $GOPATH/bin export GOBIN=$GOPATH/bin export PATH=$PATH:$GOBIN

IOT Cli Commands

Environment Variable

• IOTCLI_ENVIRONMENT - if defined and --env is provide that use it for selecting the environment

1. iot unit create --env dev | --pid 12345678901 --tid <tls-uuid>
   --pid and --tid are opetional

2. iot unit install --env dev | --pid 12345678901 --tid <tls-uuid> --data @install.json

3. iot unit assign --env dev | --pid 12345678901 --tid <tls-uuid> --data @install.json