diff --git a/packages/plugins/plugin-lib/src/ssh/ssh-access.ts b/packages/plugins/plugin-lib/src/ssh/ssh-access.ts
index 984a435c..15bd6fa8 100644
--- a/packages/plugins/plugin-lib/src/ssh/ssh-access.ts
+++ b/packages/plugins/plugin-lib/src/ssh/ssh-access.ts
@@ -136,9 +136,10 @@ export class SshAccess extends BaseAccess {
     const { SshClient } = await import("./ssh.js");
     const client = new SshClient(this.ctx.logger);
 
+    const script = ["echo hello", "exit"];
     await client.exec({
       connectConf: this,
-      script: "echo hello",
+      script: script,
     });
     return "ok";
   }
diff --git a/packages/plugins/plugin-lib/src/ssh/ssh.ts b/packages/plugins/plugin-lib/src/ssh/ssh.ts
index d0aa74e3..d148d8f1 100644
--- a/packages/plugins/plugin-lib/src/ssh/ssh.ts
+++ b/packages/plugins/plugin-lib/src/ssh/ssh.ts
@@ -469,7 +469,8 @@ export class SshClient {
 
   async isCmd(conn: AsyncSsh2Client) {
     const spec = await conn.exec("echo %COMSPEC% ");
-    if (spec.toString().trim() === "%COMSPEC%") {
+    const ret = spec.toString().trim();
+    if (ret.includes("%COMSPEC%") && !ret.includes("echo %COMSPEC%")) {
       return false;
     } else {
       return true;