Improve both the output and the source of the command line utility a bit
Improve both the output and the source of the command line utility a bit

bixuanzju/fcore,xnning/fcore,bixuanzju/fcore,wxzh/fcore,xnning/fcore,wxzh/fcore,zhiyuanshi/fcore,bixuanzju/fcore,xnning/fcore,hkuplg/fcore,wxzh/fcore,hkuplg/fcore,zhiyuanshi/fcore,hkuplg/fcore,zhiyuanshi/fcore