diff --git a/README.md b/README.md
index fdf180f..0936ad2 100644
--- a/README.md
+++ b/README.md
@@ -80,6 +80,7 @@
 * [Make git case sensitive.](https://github.com/git-tips/tips#make-git-case-sensitive)
 * [Auto correct typos.](https://github.com/git-tips/tips#auto-correct-typos)
 * [Check if the change was a part of a release.](https://github.com/git-tips/tips#check-if-the-change-was-a-part-of-a-release)
+* [Dry run. (any command that supports dry-run flag should do.)](https://github.com/git-tips/tips#dry-run-any-command-that-supports-dry-run-flag-should-do)
 
 <!-- Don’t remove or change the comment below – that can break automatic updates. More info at <http://npm.im/doxie.inject>. -->
 <!-- @doxie.inject end toc -->
@@ -551,5 +552,10 @@ git config --global help.autocorrect 1
 git name-rev --name-only <SHA-1>
 ```
 
+## Dry run. (any command that supports dry-run flag should do.)
+```sh
+git clean -fd --dry-run
+```
+
 <!-- Don’t remove or change the comment below – that can break automatic updates. More info at <http://npm.im/doxie.inject>. -->
 <!-- @doxie.inject end -->
diff --git a/tips.json b/tips.json
index dadd540..45f147a 100644
--- a/tips.json
+++ b/tips.json
@@ -243,4 +243,7 @@
 }, {
 	"title": "Check if the change was a part of a release.",
 	"tip": "git name-rev --name-only <SHA-1>"
+}, {
+	"title": "Dry run. (any command that supports dry-run flag should do.)",
+	"tip": "git clean -fd --dry-run"
 }]