diff --git a/cmd/get.go b/cmd/get.go
index 9fe5eb9..362e1f0 100644
--- a/cmd/get.go
+++ b/cmd/get.go
@@ -252,19 +252,23 @@ func (o *downloadOption) runE(cmd *cobra.Command, args []string) (err error) {
 		return
 	}
 
-	cmd.Printf("start to download from %s\n", o.URL)
+	targetURL := o.URL
+	if o.ProxyGitHub != "" {
+		targetURL = strings.Replace(targetURL, "github.com", fmt.Sprintf("%s/github.com", o.ProxyGitHub), 1)
+	}
+	cmd.Printf("start to download from %s\n", targetURL)
 	if o.Thread <= 1 {
 		downloader := &net.ContinueDownloader{}
 		downloader.WithoutProxy(o.NoProxy).
 			WithRoundTripper(o.RoundTripper)
-		err = downloader.DownloadWithContinue(o.URL, o.Output, o.ContinueAt, -1, 0, o.ShowProgress)
+		err = downloader.DownloadWithContinue(targetURL, o.Output, o.ContinueAt, -1, 0, o.ShowProgress)
 	} else {
 		downloader := &net.MultiThreadDownloader{}
 		downloader.WithKeepParts(o.KeepPart).
 			WithShowProgress(o.ShowProgress).
 			WithoutProxy(o.NoProxy).
 			WithRoundTripper(o.RoundTripper)
-		err = downloader.Download(o.URL, o.Output, o.Thread)
+		err = downloader.Download(targetURL, o.Output, o.Thread)
 	}
 	return
 }
diff --git a/pkg/installer/process.go b/pkg/installer/process.go
index 6fa4ee2..bc57b9d 100644
--- a/pkg/installer/process.go
+++ b/pkg/installer/process.go
@@ -9,6 +9,7 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"strings"
 )
 
 // Install installs a package
@@ -64,13 +65,27 @@ func (o *Installer) Install() (err error) {
 
 				if configFile.OS == o.Execer.OS() {
 					if err = os.MkdirAll(configDir, 0750); err != nil {
-						err = fmt.Errorf("cannot create config dir: %s, error: %v", configDir, err)
-						return
+						if strings.Contains(err.Error(), "permission denied") {
+							err = o.Execer.RunCommandWithSudo("mkdir", "-p", configDir)
+						}
+
+						if err != nil {
+							err = fmt.Errorf("cannot create config dir: %s, error: %v", configDir, err)
+							return
+						}
 					}
 
 					if err = os.WriteFile(configFilePath, []byte(configFile.Content), 0622); err != nil {
-						err = fmt.Errorf("cannot write config file: %s, error: %v", configFilePath, err)
-						return
+						if strings.Contains(err.Error(), "permission denied") {
+							if err = o.Execer.RunCommandWithSudo("touch", configFilePath); err == nil {
+								err = o.Execer.RunCommandWithSudo("chmod", "+w", configFilePath)
+							}
+						}
+
+						if err != nil {
+							err = fmt.Errorf("cannot write config file: %s, error: %v", configFilePath, err)
+							return
+						}
 					}
 
 					fmt.Printf("config file [%s] is ready.\n", configFilePath)