development log on command prompt

At a dev machine in office, I can see all the development log on command
prompt (windows xp) as I use application...displaying all the queries
and stuff...but I just setup this new machine and it doesnt show any
logs, it just keeps displaying like press Ctrl+C to stop etc.

Any idea?

Mongrel does this automatically, but WEBrick doesn't. If you can
install mongrel, you might get what you're looking for (and it tends
to be preferred to WEBrick, anyway).

sudo gem install mongrel

(I believe.) Otherwise, you can open a terminal and type...

tail -f log/development.log

...if you're in your application root directory. Of course, if your
new machine is also a Windows machine, you'll have to ask others for
help.

-Kyle