diff --git a/.goreleaser.yaml b/.goreleaser.yaml
index a39e2fc..c891360 100644
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@@ -17,7 +17,8 @@ before:
 #    - go generate ./...
 
 builds:
-  - env:
+  - main: ./cmd/serialterminal
+    env:
       - CGO_ENABLED=0
     goos:
       - linux
diff --git a/cmd/serialterminal/main.go b/cmd/serialterminal/main.go
new file mode 100644
index 0000000..caae043
--- /dev/null
+++ b/cmd/serialterminal/main.go
@@ -0,0 +1,7 @@
+package main
+
+import "github.com/jixishi/SerialTerminalForWindowsTerminal/internal/termapp"
+
+func main() {
+	termapp.Run()
+}
diff --git a/app.go b/internal/termapp/app.go
similarity index 99%
rename from app.go
rename to internal/termapp/app.go
index ec204f0..5241732 100644
--- a/app.go
+++ b/internal/termapp/app.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"bytes"
diff --git a/app_test.go b/internal/termapp/app_test.go
similarity index 99%
rename from app_test.go
rename to internal/termapp/app_test.go
index d630042..50ad0f3 100644
--- a/app_test.go
+++ b/internal/termapp/app_test.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"io"
diff --git a/command.go b/internal/termapp/command.go
similarity index 99%
rename from command.go
rename to internal/termapp/command.go
index d8c92aa..20d2f82 100644
--- a/command.go
+++ b/internal/termapp/command.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"encoding/hex"
diff --git a/command_test.go b/internal/termapp/command_test.go
similarity index 99%
rename from command_test.go
rename to internal/termapp/command_test.go
index abeecaa..a309e73 100644
--- a/command_test.go
+++ b/internal/termapp/command_test.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"io"
diff --git a/config.go b/internal/termapp/config.go
similarity index 93%
rename from config.go
rename to internal/termapp/config.go
index d671981..2edad96 100644
--- a/config.go
+++ b/internal/termapp/config.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	appconfig "github.com/jixishi/SerialTerminalForWindowsTerminal/internal/config"
diff --git a/config_test.go b/internal/termapp/config_test.go
similarity index 99%
rename from config_test.go
rename to internal/termapp/config_test.go
index c262727..ee6d062 100644
--- a/config_test.go
+++ b/internal/termapp/config_test.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"path/filepath"
diff --git a/escape_test.go b/internal/termapp/escape_test.go
similarity index 99%
rename from escape_test.go
rename to internal/termapp/escape_test.go
index f15f09f..7dc51e8 100644
--- a/escape_test.go
+++ b/internal/termapp/escape_test.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"testing"
diff --git a/main.go b/internal/termapp/main.go
similarity index 99%
rename from main.go
rename to internal/termapp/main.go
index 0d975f5..3e57172 100644
--- a/main.go
+++ b/internal/termapp/main.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"fmt"
@@ -21,7 +21,7 @@ func init() {
 	flag.Init(cfg)
 }
 
-func main() {
+func Run() {
 	defer func() {
 		if r := recover(); r != nil {
 			fmt.Fprintf(os.Stderr, "fatal: %v\n", r)
diff --git a/main_other.go b/internal/termapp/main_other.go
similarity index 76%
rename from main_other.go
rename to internal/termapp/main_other.go
index 2660e3b..ec4cefd 100644
--- a/main_other.go
+++ b/internal/termapp/main_other.go
@@ -1,5 +1,5 @@
 //go:build !windows
 
-package main
+package termapp
 
 func enableVTInput(fd int) {}
diff --git a/main_windows.go b/internal/termapp/main_windows.go
similarity index 94%
rename from main_windows.go
rename to internal/termapp/main_windows.go
index f9089a1..4f43c45 100644
--- a/main_windows.go
+++ b/internal/termapp/main_windows.go
@@ -1,6 +1,6 @@
 //go:build windows
 
-package main
+package termapp
 
 import (
 	"golang.org/x/sys/windows"
diff --git a/mutual.go b/internal/termapp/mutual.go
similarity index 91%
rename from mutual.go
rename to internal/termapp/mutual.go
index 66d6e5a..82205ae 100644
--- a/mutual.go
+++ b/internal/termapp/mutual.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"io"
diff --git a/tui_hotkeys.go b/internal/termapp/tui_hotkeys.go
similarity index 99%
rename from tui_hotkeys.go
rename to internal/termapp/tui_hotkeys.go
index 1a41f46..3704596 100644
--- a/tui_hotkeys.go
+++ b/internal/termapp/tui_hotkeys.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"strings"
diff --git a/tui_model.go b/internal/termapp/tui_model.go
similarity index 99%
rename from tui_model.go
rename to internal/termapp/tui_model.go
index 73d7562..a47516b 100644
--- a/tui_model.go
+++ b/internal/termapp/tui_model.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"fmt"
diff --git a/tui_panels.go b/internal/termapp/tui_panels.go
similarity index 99%
rename from tui_panels.go
rename to internal/termapp/tui_panels.go
index 13760cc..3293896 100644
--- a/tui_panels.go
+++ b/internal/termapp/tui_panels.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"fmt"
diff --git a/tui_render.go b/internal/termapp/tui_render.go
similarity index 99%
rename from tui_render.go
rename to internal/termapp/tui_render.go
index 39b69da..ad6bf04 100644
--- a/tui_render.go
+++ b/internal/termapp/tui_render.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"strings"
diff --git a/tui_test.go b/internal/termapp/tui_test.go
similarity index 99%
rename from tui_test.go
rename to internal/termapp/tui_test.go
index 47582a8..4cea772 100644
--- a/tui_test.go
+++ b/internal/termapp/tui_test.go
@@ -1,4 +1,4 @@
-package main
+package termapp
 
 import (
 	"strings"