diff --git a/manuscript/chapter19.txt b/manuscript/chapter19.txt
index f575993..c903ef0 100644
--- a/manuscript/chapter19.txt
+++ b/manuscript/chapter19.txt
@@ -186,5 +186,16 @@ ls
 command ls
 ```
 
-<!-- CHAPTER END -->
+## Run a command in the background
 
+This will run the given command and keep it running even after the terminal is closed.
+
+```sh
+bkr() {
+    (nohup "$@" &>/dev/null &)
+}
+
+bkr ./some_script.sh # some_script.sh is now running in the background
+```
+
+<!-- CHAPTER END -->