diff --git a/go.mod b/go.mod
index 75c5198..45acaea 100644
--- a/go.mod
+++ b/go.mod
@@ -4,10 +4,12 @@ go 1.16
 
 require (
 	github.com/Nerdmaster/terminal v0.12.1 // indirect
-	github.com/akamensky/argparse v1.2.2 // indirect
-	github.com/bobappleyard/readline v0.0.0-20150707195538-7e300e02d38e // indirect
+	github.com/akamensky/argparse v1.2.2
+	github.com/bobappleyard/readline v0.0.0-20150707195538-7e300e02d38e
+	github.com/chuckpreslar/emission v0.0.0-20170206194824-a7ddd980baf9 // indirect
 	github.com/eiannone/keyboard v0.0.0-20200508000154-caf4b762e807 // indirect
 	github.com/gdamore/tcell v1.4.0 // indirect
-	github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da // indirect
+	github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da
 	golang.org/x/sys v0.0.0-20210319071255-635bc2c9138d // indirect
+	layeh.com/gopher-luar v1.0.8 // indirect
 )
diff --git a/go.sum b/go.sum
index 21bb593..1e46906 100644
--- a/go.sum
+++ b/go.sum
@@ -4,6 +4,8 @@ github.com/akamensky/argparse v1.2.2 h1:P17T0ZjlUNJuWTPPJ2A5dM1wxarHgHqfYH+AZTo2
 github.com/akamensky/argparse v1.2.2/go.mod h1:S5kwC7IuDcEr5VeXtGPRVZ5o/FdhcMlQz4IZQuw64xA=
 github.com/bobappleyard/readline v0.0.0-20150707195538-7e300e02d38e h1:4G8AYOOwZdDWOiJR6D6JXaFmj5BDS7c5D5PyqsG/+Hg=
 github.com/bobappleyard/readline v0.0.0-20150707195538-7e300e02d38e/go.mod h1:fmqtV+Wqx0uFYLN1F4VhjZdtT56Dr8c3yA7nALFsw/Q=
+github.com/chuckpreslar/emission v0.0.0-20170206194824-a7ddd980baf9 h1:xz6Nv3zcwO2Lila35hcb0QloCQsc38Al13RNEzWRpX4=
+github.com/chuckpreslar/emission v0.0.0-20170206194824-a7ddd980baf9/go.mod h1:2wSM9zJkl1UQEFZgSd68NfCgRz1VL1jzy/RjCg+ULrs=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
@@ -17,6 +19,7 @@ github.com/lucasb-eyer/go-colorful v1.0.3 h1:QIbQXiugsb+q10B+MI+7DI1oQLdmnep86tW
 github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/mattn/go-runewidth v0.0.7 h1:Ei8KR0497xHyKJPAv59M1dkC+rOZCMBJ+t3fZ+twI54=
 github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/yuin/gopher-lua v0.0.0-20190206043414-8bfc7677f583/go.mod h1:gqRgreBUhTSL0GeU64rtZ3Uq3wtjOa/TB2YfrtkCbVQ=
 github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da h1:NimzV1aGyq29m5ukMK0AMWEhFaL/lrEOaephfuoiARg=
 github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da/go.mod h1:E1AXubJBdNmFERAOucpDIxNzeGfLzg0mYh+UfMWdChA=
 golang.org/x/sys v0.0.0-20190204203706-41f3e6584952/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -25,3 +28,5 @@ golang.org/x/sys v0.0.0-20210319071255-635bc2c9138d h1:jbzgAvDZn8aEnytae+4ou0J0G
 golang.org/x/sys v0.0.0-20210319071255-635bc2c9138d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+layeh.com/gopher-luar v1.0.8 h1:Uqws1Z6T0vK6pZ7ehNNurLLSFcz7+E0EOHVM4FNiMQs=
+layeh.com/gopher-luar v1.0.8/go.mod h1:TPnIVCZ2RJBndm7ohXyaqfhzjlZ+OA2SZR/YwL8tECk=
diff --git a/lua.go b/lua.go
index 685df84..0fde645 100644
--- a/lua.go
+++ b/lua.go
@@ -9,3 +9,4 @@ func hshprompt(L *lua.LState) int {
 
 	return 0
 }
+
diff --git a/main.go b/main.go
index ab2c15d..714553a 100644
--- a/main.go
+++ b/main.go
@@ -10,15 +10,19 @@ import (
 	"os/signal"
 	"strings"
 	"io"
+	lfs "hilbish/golibs/fs"
+	cmds "hilbish/golibs/commander"
 
 	"github.com/akamensky/argparse"
 	"github.com/bobappleyard/readline"
 	"github.com/yuin/gopher-lua"
+	"layeh.com/gopher-luar"
 )
 
-const version = "0.0.5"
+const version = "0.0.6"
 var l *lua.LState
 var prompt string
+var commands = map[string]bool{}
 
 func main() {
 	parser := argparse.NewParser("hilbish", "A shell for lua and flower lovers")
@@ -76,11 +80,25 @@ func main() {
 
 		if len(cmdArgs) == 0 { continue }
 
+		if commands[cmdArgs[0]] {
+			err := l.CallByParam(lua.P{
+				Fn: l.GetField(
+					l.GetTable(
+						l.GetGlobal("commander"),
+						lua.LString("__commands")),
+					cmdArgs[0]),
+				NRet: 0,
+				Protect: true,
+			}, luar.New(l, cmdArgs[1:]))
+			if err != nil {
+				// TODO: dont panic
+				panic(err)
+			}
+			continue
+		}
 		switch cmdArgs[0] {
 		case "exit":
 			os.Exit(0)
-		case "cd":
-			os.Chdir(strings.Trim(cmdString, "cd "))
 		default:
 			cmd := exec.Command(cmdArgs[0], cmdArgs[1:]...)
 			cmd.Stderr = os.Stderr
@@ -109,6 +127,21 @@ func LuaInit() {
 
 	l.SetGlobal("prompt", l.NewFunction(hshprompt))
 
+	l.PreloadModule("fs", lfs.Loader)
+
+	commander := cmds.New()
+	commander.Events.On("commandRegister",
+	func (cmdName string, cmd *lua.LFunction) {
+		commands[cmdName] = true
+		l.SetField(
+			l.GetTable(l.GetGlobal("commander"),
+			lua.LString("__commands")),
+			cmdName,
+			cmd)
+	})
+
+	l.PreloadModule("commander", commander.Loader)
+
 	err := l.DoFile(os.Getenv("HOME") + "/.hilbishrc.lua")
 	if err != nil {
 		panic(err)