diff --git a/bin/carg b/bin/carg
new file mode 100755
index 0000000..a63958f
--- /dev/null
+++ b/bin/carg
@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+# This program should be installed as `carg`. It fixes typos like
+#
+#   carg oc -> cargo c
+#   carg obuild -> cargo build
+#
+# It unconditionally removes one leading `o` from its first argument and then
+# runs the corrected `cargo` subcommand with the rest of the arguments.
+
+set -euo pipefail
+
+sub="$1"; shift;
+sub="${sub#o}"
+
+exec cargo "$sub" "$@"