diff --git a/README.md b/README.md
index 4ec15e0..71f28e3 100644
--- a/README.md
+++ b/README.md
@@ -439,6 +439,7 @@ A few examples of piecing together commands:
 
 - `fortune`, `ddate`, and `sl`: um, well, it depends on whether you consider steam locomotives and Zippy quotations "useful"
 
+- `sysctl`: view and change kernel parameters at runtime.
 
 ## MacOS X only