Detect OS in emacs.aliases.bash

aliases/available/emacs.aliases.bash

@@ -1,3 +1,11 @@
 #!/bin/bash
 
-alias em="open -a emacs"
+case $OSTYPE in
+  linux*)
+    alias em='emacs'
+    alias e='emacsclient -n'
+    ;;
+  darwin*)
+    alias em="open -a emacs"
+    ;;
+esac