diff --git a/README.md b/README.md
index 3392142..c161013 100644
--- a/README.md
+++ b/README.md
@@ -70,12 +70,3 @@ _This page is referenced by wiki [front page](https://wiki.k-space.ee) as **the*
 - etherpad NB! probably NOT using kspace_etherpad_kube NB! does not take DNS likely due to netpol, hardcoded to 172.20.36.1
 - grafana
 - woodpecker
-
-# manual sync
-```sh
-kubectl g ns -o name | cut -d/ -f2- | grep -v \
-	-e calico-apiserver -e calico-system `# by tigera-operator` \
-	-e kube-node-lease -e kube-public -e node-feature-discovery `# generated by kube` \
-	| sort > namespaces.swp
-find -mindepth 1 -maxdepth 1 -type d | cut -d/ -f2- | grep -v -e _disabled -e .git | sort > dirs.swp
-ls argocd/applications | exteat > argo.swp # exteat from github.com/jtagcat/jtagcat
diff --git a/checksync.sh b/checksync.sh
new file mode 100755
index 0000000..6246392
--- /dev/null
+++ b/checksync.sh
@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+kubectl g ns -o name | cut -d/ -f2- | grep -v \
+	-e calico-apiserver -e calico-system `# by tigera-operator` \
+	-e kube-node-lease -e kube-public -e node-feature-discovery `# generated by kube` \
+	| sort > ns.swp
+
+find -mindepth 1 -maxdepth 1 -type d | cut -d/ -f2- | grep -v -e _disabled -e .git | sort > dirs.swp
+
+ls argocd/applications | exteat > argo.swp # exteat from github.com/jtagcat/jtagcat
+
+echo 'ns <-> dirs'
+diff ns.swp dirs.swp
+
+echo 'dirs <-> argo'
+diff dirs.swp argo.swp
+
+rm ns.swp dirs.swp argo.swp