diff --git a/sh/alias/shell.sh b/sh/alias/shell.sh
index d6f5801..f216c92 100644
--- a/sh/alias/shell.sh
+++ b/sh/alias/shell.sh
@@ -16,14 +16,3 @@ x() {
 	exit \
 		"${@}"
 }
-
-[ "${RWX_SHELL}" = "bash" ] || return
-
-# shellcheck disable=SC3033
-..() {
-	cd ..
-}
-# shellcheck disable=SC3033
-...() {
-	cd ../..
-}
diff --git a/sh/shell.sh b/sh/shell/0.sh
similarity index 79%
rename from sh/shell.sh
rename to sh/shell/0.sh
index 7e56658..6a28c31 100644
--- a/sh/shell.sh
+++ b/sh/shell/0.sh
@@ -1,3 +1,7 @@
+# ╭───────╮
+# │ shell │
+# ╰───────╯
+
 _rwx_shell_color() {
 	local code="${1}"
 	case "${RWX_SHELL}" in
@@ -19,6 +23,11 @@ _rwx_shell_color() {
 		;;
 	esac
 }
+
+# ╭───────┬───────────╮
+# │ shell │ constants │
+# ╰───────┴───────────╯
+
 RWX_COLOR_BROWN="$(_rwx_shell_color 33)"
 RWX_COLOR_CYAN="$(_rwx_shell_color 36)"
 RWX_COLOR_DEFAULT="$(_rwx_shell_color)"
@@ -26,6 +35,10 @@ RWX_COLOR_GREEN="$(_rwx_shell_color 31)"
 RWX_COLOR_MAGENTA="$(_rwx_shell_color 35)"
 RWX_COLOR_RED="$(_rwx_shell_color 32)"
 
+# ╭───────┬───────────╮
+# │ shell │ functions │
+# ╰───────┴───────────╯
+
 rwx_shell_configure() {
 	[ -n "${ENV}" ] || ENV="${RWX_MAIN_PATH}"
 	export ENV
@@ -60,7 +73,6 @@ rwx_shell_configure() {
 	*) ;;
 	esac
 }
-rwx_shell_configure
 
 rwx_shell_prompt() {
 	local date host id
@@ -114,3 +126,13 @@ rwx_shell_prompt() {
 	# print
 	printf "%b" "${view}"
 }
+
+# ╭───────┬──────╮
+# │ shell │ main │
+# ╰───────┴──────╯
+
+rwx_shell_main() {
+	rwx_shell_configure
+}
+
+rwx_shell_main
diff --git a/sh/shell/bash.sh b/sh/shell/bash.sh
new file mode 100644
index 0000000..400f83c
--- /dev/null
+++ b/sh/shell/bash.sh
@@ -0,0 +1,24 @@
+# ╭───────┬──────╮
+# │ shell │ bash │
+# ╰───────┴──────╯
+
+if [ "${RWX_SHELL}" = "bash" ]; then
+
+# shellcheck disable=SC3033
+..() {
+	cd ..
+}
+# shellcheck disable=SC3033
+...() {
+	cd ../..
+}
+# shellcheck disable=SC3033
+....() {
+	cd ../../..
+}
+# shellcheck disable=SC3033
+.....() {
+	cd ../../../..
+}
+
+fi