fix(cmd): use pointer instead a copied object of the configFile environment

cmd/pressure/list.go

@@ -21,7 +21,7 @@ var listTemperatureCmd = &cobra.Command{
 	Run: func(cmd *cobra.Command, args []string) {
 
 		// read configuration
-		cnf, err := config.Read(configFile)
+		cnf, err := config.Read(*configFile)
 		if err != nil {
 			log.Fatalln(err)
 		}

cmd/pressure/pressure.go

@@ -5,7 +5,7 @@ import (
 )
 
 var compression bool
-var configFile string
+var configFile *string
 var round float64
 
 var pressureCmd = &cobra.Command{
@@ -14,7 +14,7 @@ var pressureCmd = &cobra.Command{
 }
 
 // Execute a
-func InitCmd(cmd *cobra.Command, cnfFile string) {
+func InitCmd(cmd *cobra.Command, cnfFile *string) {
 	configFile = cnfFile
 
 	cmd.AddCommand(pressureCmd)

cmd/pressure/read.go

@@ -23,7 +23,7 @@ var readPressureCmd = &cobra.Command{
 	Run: func(cmd *cobra.Command, args []string) {
 
 		// read configuration
-		cnf, err := config.Read(configFile)
+		cnf, err := config.Read(*configFile)
 		if err != nil {
 			log.Fatalln(err)
 		}