From 8b57a42aac518e4277d5f4b9c87689edeb0e90db Mon Sep 17 00:00:00 2001
From: yunlang <72660610+yl4869@users.noreply.github.com>
Date: Sun, 2 Oct 2022 21:51:08 +0800
Subject: [PATCH] join: add stdin example (#8416)

* join: add '-' file from standard input
---
 pages/common/join.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pages/common/join.md b/pages/common/join.md
index 7720ea33ef..afaa32be30 100644
--- a/pages/common/join.md
+++ b/pages/common/join.md
@@ -18,3 +18,7 @@
 - Produce a line for each unpairable line for file1:
 
 `join -a {{1}} {{file1}} {{file2}}`
+
+- Join a file from stdin:
+
+`cat {{path/to/file1}} | join - {{path/to/file2}}`