From 95846ed907a193631cf92289b51983d3394efa29 Mon Sep 17 00:00:00 2001
From: marchersimon <50295997+marchersimon@users.noreply.github.com>
Date: Tue, 30 Mar 2021 15:54:01 +0200
Subject: [PATCH] expr: add link (#5608)

---
 pages/common/expr.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pages/common/expr.md b/pages/common/expr.md
index 14912e9ee8..02081aebd5 100644
--- a/pages/common/expr.md
+++ b/pages/common/expr.md
@@ -1,6 +1,7 @@
 # expr
 
 > Evaluate expressions and manipulate strings.
+> More information: <https://www.gnu.org/software/coreutils/manual/html_node/expr-invocation.html>.
 
 - Get string length: