diff --git a/.chezmoiexternal.toml b/_home/.chezmoiexternal.toml
similarity index 100%
rename from .chezmoiexternal.toml
rename to _home/.chezmoiexternal.toml
diff --git a/.chezmoiignore b/_home/.chezmoiignore
similarity index 100%
rename from .chezmoiignore
rename to _home/.chezmoiignore
diff --git a/_home/bin/executable_sz-doctor.sh b/_home/bin/executable_sz-doctor.sh
new file mode 100644
index 0000000..aa88ca1
--- /dev/null
+++ b/_home/bin/executable_sz-doctor.sh
@@ -0,0 +1,33 @@
+#! /usr/bin/env bash
+
+function check-exist() {
+  _TEST_RESULT='Missing'
+  _TEST_NAME=$1
+  _TEST_PATH=${2:-$(type -fP $_TEST_NAME | head -1 2>/dev/null)}
+  [[ -n "$_TEST_PATH" ]] && eval "[[ ${3:--x} ${_TEST_PATH// /\\ } ]]" && _TEST_RESULT='Found'
+  printf "%-30s: %-8s %s \n" "$_TEST_NAME" "$_TEST_RESULT" "${4}"
+}
+
+echo "Shell: $SHELL"
+echo ""
+
+echo "vi editor(s) found:"
+echo "$(type -fP nvim vim vi)"
+echo ""
+
+check-exist "Byobu" "/usr/bin/byobu-launch"
+check-exist "oh-my-posh"
+check-exist "~/.poshtheme.omp.json" "oh-my-posh config" "-r"
+check-exist "tmux"
+check-exist "git"
+check-exist "emacs"
+check-exist "terraform"
+check-exist "setxkbmap"
+check-exist "chezmoi"
+check-exist "gcloud"
+check-exist 'bash completion' '/usr/share/bash-completion/bash_completion' '-r'
+check-exist 'CodeNewRoman Nerd Font' '~/.local/share/fonts/NF_CodeNewRoman' '-d'
+check-exist 'FiraCode Nerd Font' '~/.local/share/fonts/NF_FiraCode' '-d'
+check-exist '~/bin' "~/bin" '-d' '(Optional)'
+check-exist '~/.local/bin' "~/.local/bin" '-d' '(Optional)'
+echo ""
diff --git a/_home/dot_sz.shrc.d/21_aliases b/_home/dot_sz.shrc.d/21_aliases
index 64b6274..6e9f992 100644
--- a/_home/dot_sz.shrc.d/21_aliases
+++ b/_home/dot_sz.shrc.d/21_aliases
@@ -1,7 +1,16 @@
 alias sudo="/usr/bin/sudo "
 PREFERED_VI=$(type -fP nvim vim | head -1)
-[[ -z "$PREFERED_VI" ]] && PREFERED_VI=$(type -fP vi | head -1) || alias vi_editor="$PREFERED_VI -p "
-[[ -z "$PREFERED_VI" ]] && alias vi_editor='eval $EDITOR '      || alias vi_editor="$PREFERED_VI "
+if [[ -z "$PREFERED_VI" ]]; then
+  PREFERED_VI=$(type -fP vi | head -1)
+
+  if [[ -z "$PREFERED_VI" ]]; then
+    alias vi_editor='eval $EDITOR '
+  else
+    alias vi_editor="$PREFERED_VI "
+  fi
+else
+  alias vi_editor="$PREFERED_VI -p "
+fi
 alias nvim="vi_editor "
 alias vim="vi_editor "
 alias vi="vi_editor "
diff --git a/_home/dot_sz.shrc.d/bash.pre/10_check_completion b/_home/dot_sz.shrc.d/bash.pre/10_check_completion
index f2427f9..3e46793 100644
--- a/_home/dot_sz.shrc.d/bash.pre/10_check_completion
+++ b/_home/dot_sz.shrc.d/bash.pre/10_check_completion
@@ -1 +1 @@
-[[ -x /usr/share/bash-completion/bash_completion ]] && BASH_COMPLETION_EXIST=1
+[[ -r /usr/share/bash-completion/bash_completion ]] && BASH_COMPLETION_EXIST=1