check_results=`ps -ef|grep bp_driver.launch|awk '{print $2}'|sed -n 1p`
echo `kill - $check_results`
运行上面的命令后，杀掉下方19158进程
higgs 19158 17223 1 04:00 pts/17 00:00:01 /usr/bin/python /opt/ros/indigo/bin/roslaunch blackpearl bp_driver.launch
higgs 20439 19866 0 04:02 pts/18 00:00:00 grep --color=auto bp_driver