who does know how to disable firefox in-built firefox developer tools ?

[adrianmak]

I want to use tracy debugger but it support chrome or firebug+firelogger only

[tpr]

Tracy Debugger is not Chrome-only, where did you get this info?

[adrianmak]

Tracy Debugger is not Chrome-only, where did you get this info?

I mean outtputing log to browser developer tools.

[adrian]

Not tested, but take a look at these: 

http://stackoverflow.com/questions/5127776/is-there-any-way-to-start-automatically-the-firebug-inspector-after-starting-fir

https://getfirebug.com/wiki/index.php/Firebug_Preferences (in particular, the  hideDefaultInspector setting.