diff --git a/config/loader.go b/config/loader.go
index 1b77489..d32160a 100644
--- a/config/loader.go
+++ b/config/loader.go
@@ -7,6 +7,7 @@ import (
 	"strings"
 
 	"gitea.meta-tech.academy/go/core/sys"
+	"gitea.meta-tech.academy/go/core/test"
 	"gopkg.in/yaml.v3"
 )
 
@@ -14,6 +15,10 @@ func tutu() {
 	sys.RunShellCmd("ls -la")
 }
 
+func tata() {
+	test.Test()
+}
+
 type Cfg interface {
 	GetVar() []VarConfig
 }
diff --git a/go.work b/go.work
index 14c53c9..d385f4a 100644
--- a/go.work
+++ b/go.work
@@ -2,6 +2,8 @@ go 1.20
 
 use (
 	./config
+	./style
 	./sys
+	./test
 	./util
 )
diff --git a/go.work.sum b/go.work.sum
new file mode 100644
index 0000000..8a453e6
--- /dev/null
+++ b/go.work.sum
@@ -0,0 +1,3 @@
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
diff --git a/style/go.mod b/style/go.mod
new file mode 100644
index 0000000..4e4de0b
--- /dev/null
+++ b/style/go.mod
@@ -0,0 +1,13 @@
+module gitea.meta-tech.academy/go/core/style
+
+go 1.20
+
+require (
+	gitea.meta-tech.academy/go/core/util v0.0.0-20231103003446-3792c0f48134
+	github.com/gookit/color v1.5.4
+)
+
+require (
+	github.com/xo/terminfo v0.0.0-20210125001918-ca9a967f8778 // indirect
+	golang.org/x/sys v0.10.0 // indirect
+)
diff --git a/style/go.sum b/style/go.sum
new file mode 100644
index 0000000..048065f
--- /dev/null
+++ b/style/go.sum
@@ -0,0 +1,12 @@
+gitea.meta-tech.academy/go/core/util v0.0.0-20231103003446-3792c0f48134 h1:DTCBfyJ1HRBThmlYwFU6bLA2JV70inG1Yp/gug/pirk=
+gitea.meta-tech.academy/go/core/util v0.0.0-20231103003446-3792c0f48134/go.mod h1:q+p8vM+aQ36GVspuTTupRBNDUKrsXCccx4k3f7IKfx8=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/gookit/color v1.5.4 h1:FZmqs7XOyGgCAxmWyPslpiok1k05wmY3SJTytgvYFs0=
+github.com/gookit/color v1.5.4/go.mod h1:pZJOeOS8DM43rXbp4AZo1n9zCU2qjpcRko0b6/QJi9w=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/xo/terminfo v0.0.0-20210125001918-ca9a967f8778 h1:QldyIu/L63oPpyvQmHgvgickp1Yw510KJOqX7H24mg8=
+github.com/xo/terminfo v0.0.0-20210125001918-ca9a967f8778/go.mod h1:2MuV+tbUrU1zIOPMxZ5EncGwgmMJsa+9ucAQZXxsObs=
+golang.org/x/sys v0.10.0 h1:SqMFp9UcQJZa+pmYuAKjd9xq1f0j5rLcDIk0mj4qAsA=
+golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
diff --git a/style/style.go b/style/style.go
index 8901280..03ac6b0 100644
--- a/style/style.go
+++ b/style/style.go
@@ -62,9 +62,7 @@ func NewStyleByDef(def string) *Style {
 	if len(d) > KEY_STYLE_OPTION {
 		o = strings.Split(d[KEY_STYLE_OPTION], ",")
 	}
-	azz := util.str2int("123")
-	fmt.Printf(azz)
-	util.prependToSliceStr(&c, "#")
+	util.PrependToSliceStr(&c, "#")
 	var s *color.RGBStyle
 	switch len(c) {
 	case 1:
@@ -74,7 +72,7 @@ func NewStyleByDef(def string) *Style {
 	}
 	for _, elm := range o {
 
-		s.AddOpts(color.Color(util.str2int(elm, 10, 0)))
+		s.AddOpts(color.Color(util.Str2int(elm, 10, 0)))
 	}
 	// s.Printf(" %-20s\n", d[KEY_STYLE_NAME])
 	return &Style{s, d[KEY_STYLE_NAME]}
diff --git a/test/go.mod b/test/go.mod
new file mode 100644
index 0000000..f35362c
--- /dev/null
+++ b/test/go.mod
@@ -0,0 +1,3 @@
+module gitea.meta-tech.academy/go/core/test
+
+go 1.20
diff --git a/test/test.go b/test/test.go
new file mode 100644
index 0000000..4ecb1e2
--- /dev/null
+++ b/test/test.go
@@ -0,0 +1,9 @@
+package test
+
+import (
+	"fmt"
+)
+
+func Test() {
+    fmt.Printf("test")
+}
diff --git a/util/util.go b/util/util.go
index bad6353..d67c800 100644
--- a/util/util.go
+++ b/util/util.go
@@ -5,19 +5,19 @@ import (
 	"strings"
 )
 
-func prependToSliceStr(strs *[]string, prefix string) {
+func PrependToSliceStr(strs *[]string, prefix string) {
 	for i, elm := range *strs {
 		(*strs)[i] = prefix + elm
 	}
 }
 
-func appendToSliceStr(strs *[]string, suffix string) {
+func AppendToSliceStr(strs *[]string, suffix string) {
 	for i, elm := range *strs {
 		(*strs)[i] = elm + suffix
 	}
 }
 
-func str2int64(str string, base int, fallback int64) int64 {
+func Str2int64(str string, base int, fallback int64) int64 {
 	str = strings.TrimSuffix(str, "\n")
 	num, err := strconv.ParseInt(str, base, 64)
 	if err != nil {
@@ -26,11 +26,11 @@ func str2int64(str string, base int, fallback int64) int64 {
 	return num
 }
 
-func str2int(str string, base int, fallback int) int {
+func Str2int(str string, base int, fallback int) int {
 	return int(str2int64(str, base, int64(fallback)))
 }
 
-func castStrings2ints(strs *[]string) []int {
+func CastStrings2ints(strs *[]string) []int {
 	a := make([]int, len(*strs))
 	for i, elm := range *strs {
 		var f int = str2int(elm, 10, 0)