diff --git a/cmd/init.go b/cmd/init.go
new file mode 100644
index 0000000..b258737
--- /dev/null
+++ b/cmd/init.go
@@ -0,0 +1,39 @@
+/*
+ Copyright 2020 Qiniu Cloud (qiniu.com)
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+package cmd
+
+import (
+	"log"
+
+	"github.com/qiniu/goc/pkg/cover"
+	"github.com/spf13/cobra"
+)
+
+var initCmd = &cobra.Command{
+	Use:   "init",
+	Short: "Clear the register information in order to start a new round of tests",
+	Run: func(cmd *cobra.Command, args []string) {
+		if res, err := cover.NewWorker().InitSystem(center); err != nil {
+			log.Fatalf("call host %v failed, err: %v, response: %v", center, err, string(res))
+		}
+	},
+}
+
+func init() {
+	initCmd.Flags().StringVarP(&center, "center", "", "http://127.0.0.1:7777", "cover profile host center")
+	rootCmd.AddCommand(initCmd)
+}
diff --git a/pkg/build/legacy.go b/pkg/build/legacy.go
index 3f16e29..cc40e84 100644
--- a/pkg/build/legacy.go
+++ b/pkg/build/legacy.go
@@ -26,9 +26,7 @@ import (
 )
 
 func cpLegacyProject(tmpBuildDir string, pkgs map[string]*cover.Package) {
-
 	visited := make(map[string]bool)
-
 	for k, v := range pkgs {
 		dst := filepath.Join(tmpBuildDir, "src", k)
 		src := v.Dir
diff --git a/pkg/build/tmpfolder.go b/pkg/build/tmpfolder.go
index 9315870..078fd78 100644
--- a/pkg/build/tmpfolder.go
+++ b/pkg/build/tmpfolder.go
@@ -27,7 +27,7 @@ import (
 	"github.com/qiniu/goc/pkg/cover"
 )
 
-func MvProjectsToTmp(target string, args []string) (newgopath string, newWorkingDir string, tmpBuildDir string, pkgs map[string]*cover.Package) {
+func MvProjectsToTmp(target string, args []string) (newGopath string, newWorkingDir string, tmpBuildDir string, pkgs map[string]*cover.Package) {
 	listArgs := []string{"list", "-json"}
 	if len(args) != 0 {
 		listArgs = append(listArgs, args...)
@@ -36,15 +36,15 @@ func MvProjectsToTmp(target string, args []string) (newgopath string, newWorking
 	pkgs = cover.ListPackages(target, listArgs, "")
 
 	tmpBuildDir, newWorkingDir, isMod := mvProjectsToTmp(pkgs)
-	origopath := os.Getenv("GOPATH")
+	oriGopath := os.Getenv("GOPATH")
 	if isMod == true {
-		newgopath = ""
-	} else if origopath == "" {
-		newgopath = tmpBuildDir
+		newGopath = ""
+	} else if oriGopath == "" {
+		newGopath = tmpBuildDir
 	} else {
-		newgopath = fmt.Sprintf("%v:%v", tmpBuildDir, origopath)
+		newGopath = fmt.Sprintf("%v:%v", tmpBuildDir, oriGopath)
 	}
-	log.Printf("New GOPATH: %v", newgopath)
+	log.Printf("New GOPATH: %v", newGopath)
 	return
 }
 
@@ -88,10 +88,9 @@ func TmpFolderName(path string) string {
 
 // Check if it is go module project
 // true legacy
-// flase go mod
+// false go mod
 func checkIfLegacyProject(pkgs map[string]*cover.Package) bool {
 	for _, v := range pkgs {
-
 		if v.Module == nil {
 			return true
 		}
@@ -105,7 +104,7 @@ func getTmpwd(tmpBuildDir string, pkgs map[string]*cover.Package, isMod bool) st
 	for _, pkg := range pkgs {
 		path, err := os.Getwd()
 		if err != nil {
-			log.Fatalf("Cannot get current working directoy, the error is: %v", err)
+			log.Fatalf("Cannot get current working directory, the error is: %v", err)
 		}
 
 		index := -1
diff --git a/pkg/cover/store.go b/pkg/cover/store.go
index 9bae3a1..2d6f971 100644
--- a/pkg/cover/store.go
+++ b/pkg/cover/store.go
@@ -30,13 +30,13 @@ type Store interface {
 	// Add adds the given service to store
 	Add(s Service) error
 
-	// Get returns the registered service informations with the given service's name
+	// Get returns the registered service information with the given service's name
 	Get(name string) []string
 
-	// Get returns all the registered service informations as a map
+	// Get returns all the registered service information as a map
 	GetAll() map[string][]string
 
-	// Init cleanup all the registered service informations
+	// Init cleanup all the registered service information
 	Init() error
 }
 
@@ -68,25 +68,25 @@ func (l *localStore) Add(s Service) error {
 		l.servicesMap[s.Name] = []string{s.Address}
 	}
 
-	// persistent to local sotre
+	// persistent to local store
 	return l.appendToFile(s)
 }
 
-// Get returns the registered service informations with the given name
+// Get returns the registered service information with the given name
 func (l *localStore) Get(name string) []string {
 	l.mu.RLock()
 	defer l.mu.RUnlock()
 	return l.servicesMap[name]
 }
 
-// Get returns all the registered service informations
+// Get returns all the registered service information
 func (l *localStore) GetAll() map[string][]string {
 	l.mu.RLock()
 	defer l.mu.RUnlock()
 	return l.servicesMap
 }
 
-// Init cleanup all the registered service informations
+// Init cleanup all the registered service information
 // and the local persistent file
 func (l *localStore) Init() error {
 	l.mu.Lock()
@@ -99,7 +99,7 @@ func (l *localStore) Init() error {
 	return nil
 }
 
-// load all registered servcie from file to memory
+// load all registered service from file to memory
 func (l *localStore) load() (map[string][]string, error) {
 	var svrsMap = make(map[string][]string, 0)