diff --git a/cmd/doc/doc.go b/cmd/doc/doc.go
new file mode 100644
index 0000000..74e3289
--- /dev/null
+++ b/cmd/doc/doc.go
@@ -0,0 +1,19 @@
+package doc
+
+import (
+	"github.com/spf13/cobra"
+	"github.com/spf13/cobra/doc"
+)
+
+var DocCmd = &cobra.Command{
+	Use:    "doc",
+	Short:  "Generate documentation",
+	Hidden: true,
+	Run: func(cmd *cobra.Command, args []string) {
+		// doc.GenManTree(cmd.Parent(), nil, "/tmp")
+		doc.GenMarkdownTree(cmd.Parent(), "../bb-cli.wiki")
+	},
+}
+
+func init() {
+}
diff --git a/cmd/root.go b/cmd/root.go
index 90e2d84..905cd60 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -2,10 +2,11 @@ package cmd
 
 import (
 	"bb/cmd/auth"
+	"bb/cmd/doc"
+	"bb/cmd/environment"
 	"bb/cmd/issue"
 	"bb/cmd/pipeline"
 	"bb/cmd/pr"
-	"bb/cmd/environment"
 	"os"
 
 	"github.com/spf13/cobra"
@@ -40,6 +41,7 @@ func init() {
 	RootCmd.AddCommand(environment.EnvironmentCmd)
 	RootCmd.AddCommand(issue.IssueCmd)
 	RootCmd.AddCommand(pipeline.PipelineCmd)
+	RootCmd.AddCommand(doc.DocCmd)
 }
 
 func initConfig() {
diff --git a/go.mod b/go.mod
index c5ea7bd..83227a2 100644
--- a/go.mod
+++ b/go.mod
@@ -5,11 +5,12 @@ go 1.20
 require (
 	github.com/ktr0731/go-fuzzyfinder v0.7.0
 	github.com/ldez/go-git-cmd-wrapper/v2 v2.6.0
-	github.com/spf13/cobra v1.7.0
+	github.com/spf13/cobra v1.8.0
 	github.com/spf13/viper v1.16.0
 )
 
 require (
+	github.com/cpuguy83/go-md2man/v2 v2.0.3 // indirect
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/gdamore/encoding v1.0.0 // indirect
 	github.com/gdamore/tcell/v2 v2.5.3 // indirect
@@ -24,6 +25,7 @@ require (
 	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/rivo/uniseg v0.4.2 // indirect
+	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/spf13/afero v1.9.5 // indirect
 	github.com/spf13/cast v1.5.1 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
diff --git a/go.sum b/go.sum
index 0afa68c..cb5798e 100644
--- a/go.sum
+++ b/go.sum
@@ -47,6 +47,8 @@ github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGX
 github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/cpuguy83/go-md2man/v2 v2.0.3 h1:qMCsGGgs+MAzDFyp9LpAe1Lqy/fY/qCovCm0qnXZOBM=
+github.com/cpuguy83/go-md2man/v2 v2.0.3/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -173,6 +175,7 @@ github.com/rivo/uniseg v0.4.2 h1:YwD0ulJSJytLpiaWua0sBDusfsCZohxjxzVTYjwxfV8=
 github.com/rivo/uniseg v0.4.2/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
+github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/spf13/afero v1.9.5 h1:stMpOSZFs//0Lv29HduCmli3GUfpFoF3Y1Q/aXj/wVM=
 github.com/spf13/afero v1.9.5/go.mod h1:UBogFpq8E9Hx+xc5CNTTEpTnuHVmXDwZcZcE1eb/UhQ=
@@ -180,6 +183,8 @@ github.com/spf13/cast v1.5.1 h1:R+kOtfhWQE6TVQzY+4D7wJLBgkdVasCEFxSUBYBYIlA=
 github.com/spf13/cast v1.5.1/go.mod h1:b9PdjNptOpzXr7Rq1q9gJML/2cdGQAo69NKzQ10KN48=
 github.com/spf13/cobra v1.7.0 h1:hyqWnYt1ZQShIddO5kBpj3vu05/++x6tJ6dg8EC572I=
 github.com/spf13/cobra v1.7.0/go.mod h1:uLxZILRyS/50WlhOIKD7W6V5bgeIt+4sICxh6uRMrb0=
+github.com/spf13/cobra v1.8.0 h1:7aJaZx1B85qltLMc546zn58BxxfZdR/W22ej9CFoEf0=
+github.com/spf13/cobra v1.8.0/go.mod h1:WXLWApfZ71AjXPya3WOlMsY9yMs7YeiHhFVlvLyhcho=
 github.com/spf13/jwalterweatherman v1.1.0 h1:ue6voC5bR5F8YxI5S67j9i582FU4Qvo2bmqnqMYADFk=
 github.com/spf13/jwalterweatherman v1.1.0/go.mod h1:aNWZUN0dPAAO/Ljvb5BEdw96iTZ0EXowPYD95IqWIGo=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=