diff --git a/cd.sh b/cd.sh
index 5717dbd..1a5b638 100644
--- a/cd.sh
+++ b/cd.sh
@@ -1,7 +1,6 @@
-#! /usr/bin/env bash
+#! /usr/bin/env sh
 
-CD_NAME='cd'
-CD_PROJECTS_PARENT='rwx'
+set 'cd' 'rwx'
 
 function cd_main {
     cd_set_environment
@@ -20,8 +19,8 @@ function cd_main {
     cd_install_git
     cd_install_python
     cd_clean_packages_cache
-    cd_install
-    cd_bootstrap
+    cd_install "${@}"
+    cd_bootstrap "${@}"
 }
 
 function cd_set_environment {
@@ -252,10 +251,7 @@ local repository
 local root
     cd_step "${FUNCNAME}"
     root="$(mktemp --directory)" || exit
-    for repository in \
-    "${CD_PROJECTS_PARENT}" \
-    "${CD_NAME}" \
-    ; do
+    for repository in "${@}" ; do
         git clone \
         "${CD_PROJECTS_URL}/${repository}" "${root}/${repository}" \
         || exit
@@ -268,7 +264,7 @@ local root
 
 function cd_bootstrap {
     cd_step "${FUNCNAME}"
-    "${CD_PYTHON_COMMAND}" -m "${CD_NAME}"
+    "${CD_PYTHON_COMMAND}" -m "${1}"
 }
 
 cd_main