diff --git a/pages/common/uniq.md b/pages/common/uniq.md
index d39c0b267e..747827e25e 100644
--- a/pages/common/uniq.md
+++ b/pages/common/uniq.md
@@ -2,6 +2,7 @@
 
 > Output the unique lines from the given input or file.
 > Since it does not detect repeated lines unless they are adjacent, we need to sort them first.
+> More information: <https://www.gnu.org/software/coreutils/manual/html_node/uniq-invocation.html>.
 
 - Display each line once: