1 files changed, 9 insertions, 0 deletions
diff --git a/shadow.install b/shadow.install
new file mode 100644
index 000000000000..14384c3330e8
--- /dev/null
+++ b/shadow.install
@@ -0,0 +1,9 @@
+post_upgrade() {
+  grpck -r >/dev/null 2>&1
+  if [ $? -eq 2 ]; then
+    printf '%s\n' \
+      "==> Warning: /etc/group or /etc/gshadow are inconsistent." \
+      "    Run 'grpck' to correct this."
+  fi
+  return 0
+}