diff --git a/README.md b/README.md
index 4caa59d..cad3fc4 100644
--- a/README.md
+++ b/README.md
@@ -169,6 +169,15 @@ retry
 ---
 Retry a command 5 times or until it succeeds
 
+rtmux
+---
+
+Usage:
+
+    rtmux HOST
+
+Attaches to a remote tmux session, or opens one if none exists.
+
 say
 ---
 Read the text aloud. Requires `festival`.
diff --git a/rtmux b/rtmux
new file mode 100755
index 0000000..9cb8592
--- /dev/null
+++ b/rtmux
@@ -0,0 +1,2 @@
+#!/bin/bash
+ssh -t "$@" -- "tmux attach || tmux new"