diff --git a/unix/copying-file-contents-to-system-paste-buffer.md b/unix/copying-file-contents-to-system-paste-buffer.md
index 1d83b2c..1c2c568 100644
--- a/unix/copying-file-contents-to-system-paste-buffer.md
+++ b/unix/copying-file-contents-to-system-paste-buffer.md
@@ -8,3 +8,5 @@ paste buffer.
 ```
 $ cat some-file.txt | pbcopy
 ```
+
+See `man pbcopy` for more details.