ubuntu 新开一个终端并执行一条指令

zhangym@zhangym:~/qdudews$ gnome-terminal -x bash -c "rosrun joy joy_node; exec bash;"
zhangym@zhangym:~/qdudews$ gnome-terminal -x bash -c "rosmsg show nav_msgs/Odometry; exec bash;"
zhangym@zhangym:~/qdudews$ gnome-terminal -x bash -c "roslaunch dmac slave.launch ; exec bash;"
zhangym@zhangym:~/qdudews$ gnome-terminal -x bash -c "roscd dmac; exec bash;"
zhangym@zhangym:~/qdudews$ gnome-terminal -x bash -c "source ~/.bashrc;roscd dmac; exec bash;"
zhangym@zhangym:~/qdudews$ gnome-terminal -x bash -c "roscd dmac; exec bash;"
zhangym@zhangym:~/qdudews$ gnome-terminal -x bash -c "roslaunch dmac slave.launch ; exec bash;"
zhangym@zhangym:~/qdudews$ gnome-terminal -x bash -c "roslaunch dmac slave.launch ; exec bash;"
zhangym@zhangym:~/qdudews$