diff --git a/vim/vim/ftdetect/bash.vim b/vim/vim/ftdetect/bash.vim
new file mode 100644
index 0000000..86f6831
--- /dev/null
+++ b/vim/vim/ftdetect/bash.vim
@@ -0,0 +1,7 @@
+fun! s:DetectNode()
+    if getline(1) == '#!/usr/bin/env bash'
+        set ft=sh
+    endif
+endfun
+
+autocmd BufNewFile,BufRead * call s:DetectNode()
diff --git a/vim/vim/ftdetect/sh.vim b/vim/vim/ftdetect/sh.vim
new file mode 100644
index 0000000..5b1260a
--- /dev/null
+++ b/vim/vim/ftdetect/sh.vim
@@ -0,0 +1,7 @@
+fun! s:DetectNode()
+    if getline(1) == '#!/usr/bin/env sh'
+        set ft=sh
+    endif
+endfun
+
+autocmd BufNewFile,BufRead * call s:DetectNode()
diff --git a/vim/vim/ftdetect/zsh.vim b/vim/vim/ftdetect/zsh.vim
new file mode 100644
index 0000000..3b368c6
--- /dev/null
+++ b/vim/vim/ftdetect/zsh.vim
@@ -0,0 +1,7 @@
+fun! s:DetectNode()
+    if getline(1) == '#!/usr/bin/env zsh'
+        set ft=sh
+    endif
+endfun
+
+autocmd BufNewFile,BufRead * call s:DetectNode()