Git for Windows: can't run any commands after command git config --list

I using git bash in windows 7 environments. I start git bash and type git config --list but after that I can't run any commands and git bash only show (end) in screen. I don't know what happen and that's command is worked properly before.
Screenshots:

It looks like git config --list has opened less for showing the config list. You can enter :q to exit less.