diff --git a/pages/common/sync.md b/pages/common/sync.md
index a5faab24c3..c9fb0334eb 100644
--- a/pages/common/sync.md
+++ b/pages/common/sync.md
@@ -1,6 +1,7 @@
 # sync
 
 > Flushes all pending write operations to the appropriate disks.
+> More information: <https://www.gnu.org/software/coreutils/manual/html_node/sync-invocation.html>.
 
 - Flush all pending write operations on all disks: