diff --git a/scripts/cdb/cmd.py b/scripts/cdb/cmd.py
index 1806ae7..05c7d95 100644
--- a/scripts/cdb/cmd.py
+++ b/scripts/cdb/cmd.py
@@ -1,10 +1,14 @@
 
+g_cmdstr = ''
+
+def _getCmdParam():
+    return g_cmdstr[1:]
+
 def _b_cmd(browser, tab, scriptmgr, params):
     filename = params[0].split(':')[0]
     line = int(params[0].split(':')[1])
     url = scriptmgr.getUrl(filename)
     print(params, url)
-#    tab.debug = True
     tab.call_method("Debugger.setBreakpointByUrl",
                     lineNumber=line,
                     url=url,
@@ -16,7 +20,13 @@ def _bt_cmd(browser, tab, scriptmgr, params):
     scriptmgr.dumpStack()
 
 def _p_cmd(browser, tab, scriptmgr, params):
-    pass
+    tab.call_method("Debugger.evaluateOnCallFrame",
+                    callFrameId=scriptmgr.getFrameId(),
+                    expression='console.log(' + _getCmdParam() + ')'
+    )
+
+def _f_cmd(browser, tab, scriptmgr, params):
+    scriptmgr.curr_frame = int(params[0])
 
 def _debugon_cmd(browser, tab, scriptmgr, params):
     tab.debug = True
@@ -31,6 +41,8 @@ def _exit_cmd(browser, tab, scriptmgr, params):
     exit(0)
 
 def _processCdbCmd(cmd_str, browser, tab, scriptmgr):
+    global g_cmdstr
+    g_cmdstr = cmd_str
     cmdlist = cmd_str.split(' ')
     if len(cmdlist) < 1:
         return
@@ -38,9 +50,9 @@ def _processCdbCmd(cmd_str, browser, tab, scriptmgr):
         'b': _b_cmd,
         'bt': _bt_cmd,
         'p': _p_cmd,
+        'f': _f_cmd,
         'debugon': _debugon_cmd,
         'debugoff': _debugoff_cmd,
-        'exit': _exit_cmd,
         'q': _exit_cmd,
     }
     if cmdlist[0] in cmd_hash:
diff --git a/scripts/cdb/scriptmgr.py b/scripts/cdb/scriptmgr.py
index 7a65c6e..9e30166 100644
--- a/scripts/cdb/scriptmgr.py
+++ b/scripts/cdb/scriptmgr.py
@@ -7,6 +7,7 @@ def getShortUrl(url):
 class ScriptMgr:
 
     def __init__(self, tab):
+        self.curr_frame = 0
         self.frames = []
         self.scripts = []
         self.tab = tab
@@ -51,3 +52,6 @@ class ScriptMgr:
                       frame['functionLocation']['lineNumber'],
                   )
                   )
+
+    def getFrameId(self):
+        return self.frames[self.curr_frame]['callFrameId']