test stdout

@@ -170,17 +170,12 @@ class PageCahe extends Model {
         return new Promise((resolve, reject) => {
             //检查shell脚本的危险操作
             if (self._checkDangerScript(script)) {
-                self._broadcast('ls');
+                self._broadcast(script);
                 // resolve();
-                let result = conn.exec('ls', (err, stream) => {
-                    stream.on('data', function(data) {
-                      self._broadcast('STDOUT: ' + data);
-                    }).stderr.on('data', function(data) {
-                      self._broadcast('STDERR: ' + data);
-                    });
+                let result = conn.exec(script, (err, stream) => {
                     if (err) {
-                        self._broadcast('执行错误：${err}');
                         reject(err);
+                        self._broadcast('执行错误：${err}');
                     } else {
                         stream.on('exit', (code) => {
                             resolve();