diff --git a/cmd/root.go b/cmd/root.go
index 5be8dcb..9b50de4 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -4,18 +4,38 @@ import (
 	"fmt"
 	"os"
 
-	"git.bloy.org/mike/gotest/version"
+	"github.com/kyoh86/xdg"
 	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
 )
 
+var cfgFile string
+
 var rootCmd = &cobra.Command{
 	Use:   "gotest",
 	Short: "Gotest is a thing for testing out go packaging and boilerplate",
 	Long:  "An Experiment",
-	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("Hello world!")
-	},
-	Version: version.Version.String(),
+}
+
+func init() {
+	cobra.OnInitialize(initConfig)
+	viper.SetDefault("port", 8000)
+	rootCmd.PersistentFlags().StringVarP(&cfgFile, "config", "c",
+		"", "Full path to config file")
+}
+
+func initConfig() {
+	viper.SetEnvPrefix("gotest")
+	viper.AutomaticEnv()
+	if cfgFile != "" {
+		viper.SetConfigFile(cfgFile)
+	} else {
+		for _, p := range xdg.AllConfigDirs() {
+			viper.AddConfigPath(p)
+		}
+		viper.SetConfigName("gotest")
+	}
+	viper.ReadInConfig()
 }
 
 // Execute the root command
diff --git a/cmd/version.go b/cmd/version.go
new file mode 100644
index 0000000..0c748c4
--- /dev/null
+++ b/cmd/version.go
@@ -0,0 +1,33 @@
+package cmd
+
+import (
+	"fmt"
+
+	"git.bloy.org/mike/gotest/version"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+)
+
+var showCfg bool
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+	versionCmd.Flags().BoolVarP(&showCfg, "long", "l", false,
+		"Show the configuration as well as the version")
+}
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Print the version number",
+	Long:  "All software has versions. This is how you see it.",
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Printf("This is GoTest %s\n\n", version.Version)
+		fmt.Printf("  Config location: %s\n", viper.ConfigFileUsed())
+		if showCfg {
+			fmt.Println("\nConfiguration Data:")
+			for _, key := range viper.AllKeys() {
+				fmt.Printf("    %s: %t\n", key, viper.Get(key))
+			}
+		}
+	},
+}
diff --git a/go.mod b/go.mod
index 9b0fde0..2c625c4 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,8 @@ module git.bloy.org/mike/gotest
 
 go 1.12
 
-require github.com/spf13/cobra v0.0.5
+require (
+	github.com/kyoh86/xdg v1.0.0
+	github.com/spf13/cobra v0.0.5
+	github.com/spf13/viper v1.3.2
+)
diff --git a/go.sum b/go.sum
index baada52..edb0572 100644
--- a/go.sum
+++ b/go.sum
@@ -4,29 +4,46 @@ github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/kyoh86/xdg v1.0.0 h1:TD1layQ0epNApNwGRblnQnT3S/2UH/gCQN1cmXWotvE=
+github.com/kyoh86/xdg v1.0.0/go.mod h1:Z5mDqe0fxyxn3W2yTxsBAOQqIrXADQIh02wrTnaRM38=
+github.com/magiconair/properties v1.8.0 h1:LLgXmsheXeRoUOBOjtwPQCWIYqM/LU1ayDtDePerRcY=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
+github.com/pelletier/go-toml v1.2.0 h1:T5zMGML61Wp+FlcbWjRDT7yAxhJNAiPPLOFECq181zc=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
+github.com/spf13/afero v1.1.2 h1:m8/z1t7/fwjysjQRYbP0RD+bUIF/8tJwPdEZsI83ACI=
 github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
+github.com/spf13/cast v1.3.0 h1:oget//CVOEoFewqQxwr0Ej5yjygnqGkvggSE/gB35Q8=
 github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
 github.com/spf13/cobra v0.0.5 h1:f0B+LkLX6DtmRH1isoNA9VTtNUK9K8xYd28JNNfOv/s=
 github.com/spf13/cobra v0.0.5/go.mod h1:3K3wKZymM7VvHMDS9+Akkh4K60UwM26emMESw8tLCHU=
+github.com/spf13/jwalterweatherman v1.0.0 h1:XHEdyB+EcvlqZamSM4ZOMGlc93t6AcsBEu9Gc1vn7yk=
 github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo=
 github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
+github.com/spf13/viper v1.3.2 h1:VUFqw5KcqRf7i70GOzW7N+Q7+gxVBkSSqiXB12+JQ4M=
 github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DMA2s=
+github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a h1:1n5lsVfiQW3yfsRGu98756EH1YthsFqr/5mxHduZW2A=
 golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
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