diff --git a/bootstrap.sh b/cd-bootstrap.sh
similarity index 60%
rename from bootstrap.sh
rename to cd-bootstrap.sh
index 054d967..dbab7b6 100755
--- a/bootstrap.sh
+++ b/cd-bootstrap.sh
@@ -1,7 +1,3 @@
-FILE="$(realpath "${BASH_SOURCE[0]}")"
-ROOT="$(dirname "${FILE}")"
-
-COMMANDS='cmd'
 KEY_ALGORITHM='ed25519'
 KEY_DIRECTORY='.ssh'
 KEY_PATH="${KEY_DIRECTORY}/id_${KEY_ALGORITHM}"
@@ -12,15 +8,6 @@ PACKAGES=(
 'tree'
 )
 SERVER="$(basename ${GITHUB_SERVER_URL})"
-TARGET='/usr/local/sbin'
-
-# commands
-cd "${ROOT}/${COMMANDS}" \
-|| exit
-for file in *.sh ; do
-    cp "${file}" "${TARGET}/${file%.sh}" \
-    || exit
-done
 
 # ssh
 cd \
@@ -37,8 +24,4 @@ echo "${SERVER} ssh-${KEY_ALGORITHM} ${KEY_PUBLIC}" \
 || exit
 
 # packages
-apt-get install --yes "${PACKAGES[@]}" \
-|| exit
-
-# remove
-rm --force --recursive "${ROOT}"
+apt-get install --yes "${PACKAGES[@]}"
diff --git a/cmd/cd-browse-workspace.sh b/cd-browse-workspace
similarity index 100%
rename from cmd/cd-browse-workspace.sh
rename to cd-browse-workspace
diff --git a/cmd/cd-build-project.sh b/cd-build-project
similarity index 100%
rename from cmd/cd-build-project.sh
rename to cd-build-project
diff --git a/cmd/cd-clone-branch.sh b/cd-clone-branch
similarity index 100%
rename from cmd/cd-clone-branch.sh
rename to cd-clone-branch
diff --git a/cmd/cd-clone-python.sh b/cd-clone-python
similarity index 100%
rename from cmd/cd-clone-python.sh
rename to cd-clone-python
diff --git a/cmd/cd-install-packages.sh b/cd-install-packages
similarity index 100%
rename from cmd/cd-install-packages.sh
rename to cd-install-packages
diff --git a/cd-list-environment b/cd-list-environment
new file mode 100755
index 0000000..e22987a
--- /dev/null
+++ b/cd-list-environment
@@ -0,0 +1,2 @@
+unset TOP_SECRET
+env | sort
diff --git a/cmd/cd-synchronize.sh b/cd-synchronize
similarity index 100%
rename from cmd/cd-synchronize.sh
rename to cd-synchronize
diff --git a/cd.sh b/cd.sh
index f04df33..583d97d 100644
--- a/cd.sh
+++ b/cd.sh
@@ -5,6 +5,7 @@ PACKAGES=(
 'git'
 )
 REPOSITORY='rwx.work/cd'
+TARGET='/usr/local/sbin'
 
 for nameserver in "${NAMESERVERS[@]}" ; do
     echo "nameserver ${nameserver}" \
@@ -18,10 +19,9 @@ apt-get update \
 apt-get install --yes "${PACKAGES[@]}" \
 || exit
 
-DIRECTORY="$(mktemp --directory)" \
-|| exit
 git clone \
 "${GITHUB_SERVER_URL}/${REPOSITORY}" \
-"${DIRECTORY}" \
+"${TARGET}" \
 || exit
-"${DIRECTORY}/bootstrap.sh"
+
+cd-bootstrap.sh
diff --git a/cmd/cd-list-environment.sh b/cmd/cd-list-environment.sh
deleted file mode 100755
index dd3fd37..0000000
--- a/cmd/cd-list-environment.sh
+++ /dev/null
@@ -1 +0,0 @@
-env | sort