diff --git a/main.go b/main.go
index f42c75c..2e2fc95 100644
--- a/main.go
+++ b/main.go
@@ -5,63 +5,29 @@ import (
 	"io"
 	"os"
 	"time"
-
-	"golang.org/x/term"
-
-	"github.com/aymanbagabas/go-pty"
-
-	"github.com/hymkor/go-windows1x-virtualterminal"
 )
 
-func loop(ptmx pty.Pty) error {
-	watcher := NewWatcher(ptmx)
+func mains() error {
+	term, err := NewTerm()
+	if err != nil {
+		return err
+	}
+	defer term.Close()
 
-	sh := ptmx.Command("cmd.exe")
+	watcher := NewWatcher(term)
+
+	sh := term.Command("cmd.exe")
 	if err := sh.Start(); err != nil {
 		return err
 	}
 
 	i := watcher.ExpectWithTimeout(time.Duration(10*time.Second), "100")
 	// i := watcher.Expect("100")
-	io.WriteString(ptmx, "exit\r")
+	io.WriteString(term, "\x03exit\r")
 	println(i)
 	return sh.Wait()
 }
 
-func mains() error {
-	disableStdout, err := virtualterminal.EnableStdout()
-	if err != nil {
-		return err
-	}
-	defer disableStdout()
-
-	disableStdin, err := virtualterminal.EnableStdin()
-	if err != nil {
-		return err
-	}
-	defer disableStdin()
-
-	ptmx, err := pty.New()
-	if err != nil {
-		return err
-	}
-	defer ptmx.Close()
-
-	width, height, err := term.GetSize(int(os.Stdout.Fd()))
-	if err != nil {
-		return err
-	}
-	ptmx.Resize(width, height)
-
-	oldState, err := term.MakeRaw(int(os.Stdin.Fd()))
-	if err != nil {
-		return err
-	}
-	defer term.Restore(int(os.Stdin.Fd()), oldState)
-
-	return loop(ptmx)
-}
-
 func main() {
 	if err := mains(); err != nil {
 		fmt.Fprintln(os.Stderr, err.Error())
diff --git a/term.go b/term.go
new file mode 100644
index 0000000..3845bdc
--- /dev/null
+++ b/term.go
@@ -0,0 +1,62 @@
+package main
+
+import (
+	"os"
+
+	"golang.org/x/term"
+
+	"github.com/aymanbagabas/go-pty"
+
+	"github.com/hymkor/go-windows1x-virtualterminal"
+)
+
+type Term struct {
+	pty.Pty
+	closers []func()
+}
+
+func (T *Term) Close() {
+	for i := len(T.closers) - 1; i >= 0; i-- {
+		T.closers[i]()
+	}
+	T.closers = nil
+}
+
+func NewTerm() (*Term, error) {
+	T := &Term{}
+
+	disableStdout, err := virtualterminal.EnableStdout()
+	if err != nil {
+		return nil, err
+	}
+	T.closers = append(T.closers, disableStdout)
+
+	disableStdin, err := virtualterminal.EnableStdin()
+	if err != nil {
+		T.Close()
+		return nil, err
+	}
+	T.closers = append(T.closers, disableStdin)
+
+	T.Pty, err = pty.New()
+	if err != nil {
+		T.Close()
+		return nil, err
+	}
+	T.closers = append(T.closers, func() { T.Pty.Close() })
+
+	width, height, err := term.GetSize(int(os.Stdout.Fd()))
+	if err != nil {
+		T.Close()
+		return nil, err
+	}
+	T.Pty.Resize(width, height)
+
+	oldState, err := term.MakeRaw(int(os.Stdin.Fd()))
+	if err != nil {
+		T.Close()
+		return nil, err
+	}
+	T.closers = append(T.closers, func() { term.Restore(int(os.Stdin.Fd()), oldState) })
+	return T, nil
+}