Add Wipe Out All Precompiled Assets as a rails til

Author: jbranchaud

README.md

@@ -9,7 +9,7 @@ and pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://tinyletter.com/jbranchaud).
 
-_882 TILs and counting..._
+_883 TILs and counting..._
 
 ---
 
@@ -560,6 +560,7 @@ _882 TILs and counting..._
 - [Truncate Almost All Tables](rails/truncate-almost-all-tables.md)
 - [Update Column Versus Update Attribute](rails/update-column-versus-update-attribute.md)
 - [Where Am I In The Partial Iteration?](rails/where-am-i-in-the-partial-iteration.md)
+- [Wipe Out All Precompiled Assets](rails/wipe-out-all-precompiled-assets.md)
 - [Write Safer Where Clauses With Placeholders](rails/write-safer-where-clauses-with-placeholders.md)
 
 ### React

rails/wipe-out-all-precompiled-assets.md

@@ -0,0 +1,19 @@
+# Wipe Out All Precompiled Assets
+
+You can clean up precompiled assets using:
+
+```bash
+$ rails assets:clean
+```
+
+This command is built to be safe for situations like rolling deploys. Any
+assets that are still being used will not be cleaned up.
+
+If you really want to wipe out _all_ precompiled assets, you should _clobber_
+them:
+
+```bash
+$ rails assets:clobber
+```
+
+[source](https://edgeguides.rubyonrails.org/command_line.html#rails-assets)