diff --git a/pages.zh/common/md5sum.md b/pages.zh/common/md5sum.md
index b856d23430..45d83b1dea 100644
--- a/pages.zh/common/md5sum.md
+++ b/pages.zh/common/md5sum.md
@@ -1,6 +1,7 @@
 # md5sum
 
 > 计算 MD5 加密校验和.
+> 更多信息： <https://www.gnu.org/software/coreutils/manual/html_node/md5sum-invocation.html>.
 
 - 计算文件的 MD5 校验和:
 
diff --git a/pages/common/md5sum.md b/pages/common/md5sum.md
index b11154f811..363995c904 100644
--- a/pages/common/md5sum.md
+++ b/pages/common/md5sum.md
@@ -1,6 +1,7 @@
 # md5sum
 
 > Calculate MD5 cryptographic checksums.
+> More information: <https://www.gnu.org/software/coreutils/manual/html_node/md5sum-invocation.html>.
 
 - Calculate the MD5 checksum for a file: