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+# Cloud terminal tutorial
+
+Cloud terminal is a web terminal running in the container, 
+and the user's .kube/config has been configured in the terminal,
+
+It also contains some commonly used commands, 
+which can be used to access almost all APIs of applications that sealos has provided.
+
+Tips: Currently, persistent files are not supported in the terminal. 
+
+## Access api server
+
+Kubectl has been installed in the terminal, and the user's kubeconfig has also been configured.
+
+```shell
+root@thpqxr0bh:~# kubectl get pod
+NAME                                                             READY   STATUS    RESTARTS   AGE
+acid-test-0                                                      1/1     Running   0          37m
+terminal-8b66134e-5294-480f-b6c4-00243fc2488e-5cdc66697c-d5tss   1/1     Running   0          40m
+```
+
+.kube/config:
+
+```shell
+root@thpqxr0bh:~# cat .kube/config 
+apiVersion: v1
+clusters:
+- cluster:
+    server: https://kubernetes.default.svc.cluster.local:443
+  name: kubernetes
+contexts:
+- context:
+    cluster: kubernetes
+    user: 8b66134e-5294-480f-b6c4-00243fc2488e
+    namespace: ns-8b66134e-5294-480f-b6c4-00243fc2488e
+  name: 8b66134e-5294-480f-b6c4-00243fc2488e
+current-context: 8b66134e-5294-480f-b6c4-00243fc2488e
+kind: Config
+preferences: {}
+users:
+- name: 8b66134e-5294-480f-b6c4-00243fc2488e
+  user:
+    token: eyJhbGciOiJSUzI1NiIsImtpZCI6IjItUWxyLUc3X0FiNjF...
+```
+
+If you change the server address to https://cloud.sealos.io:6443, 
+you can access the api server remotely, such as using your local terminal,
+Or integrate into any CI/CD system, just copy the file content to the client's ~.kube/config directory
+
+## Access Control
+
+When you try to list cluster nodes:
+
+```shell
+root@thpqxr0bh:~# kubectl get node
+Error from server (Forbidden): nodes is forbidden: 
+User "system:serviceaccount:user-system:8b66134e-5294-480f-b6c4-00243fc2488e" 
+cannot list resource "nodes" in API group "" at the cluster scope
+```
+
+Users do not have permission to access.
+
+## Access other resources
+
+You can access the database instance through the terminal, 
+or the multi-cluster provided by sealos cloud provider
+
+```shell
+root@thpqxr0bh:~# kubectl get infra
+NAME    STATUS    AGE     AZ
+aaa     Running   3d23h   cn-north-1b
+fanux   Running   4d3h    cn-north-1b
+test    Running   13d     cn-north-1b
+root@thpqxr0bh:~# kubectl get cluster
+NAME    AGE
+aaa     3d23h
+fanux   4d3h
+test    13d
+root@thpqxr0bh:~# kubectl get infra
+NAME    STATUS    AGE     AZ
+aaa     Running   3d23h   cn-north-1b
+fanux   Running   4d3h    cn-north-1b
+test    Running   13d     cn-north-1b
+```
+
+Of course, you can also delete or edit these resources.
+
+## Debugging
+
+terminal is still a debugging tool, 
+because its is also a pod running under the user ns, 
+and it comes with many network tools.
+
+```shell
+root@thpqxr0bh:~# nslookup acid-test
+Server:         10.96.0.10
+Address:        10.96.0.10#53
+
+Name:   acid-test.ns-8b66134e-5294-480f-b6c4-00243fc2488e.svc.cluster.local
+Address: 10.96.2.134
+
+root@thpqxr0bh:~# ping 10.96.2.134
+PING 10.96.2.134 (10.96.2.134) 56(84) bytes of data.
+64 bytes from 10.96.2.134: icmp_seq=1 ttl=64 time=0.048 ms
+64 bytes from 10.96.2.134: icmp_seq=2 ttl=64 time=0.069 ms
+```
+
+## You can even write code in the terminal
+
+![img_1.png](go-code-terminal.png)
+```shell
+root@thpqxr0bh:~# vim main.go
+root@thpqxr0bh:~# go run main.go 
+hello sealos!
+```
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diff --git a/docs/4.0/docs/examples/use-sealos-cloud-hello-world.md b/docs/4.0/docs/cloud/apps/terminal/use-sealos-cloud-hello-world.md
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