yangbin-u2@yangbinu2-virtual-machine:~$ cd 下载/yong/
yangbin-u2@yangbinu2-virtual-machine:~/下载/yong$ chmod +x yong-tool.sh
yangbin-u2@yangbinu2-virtual-machine:~/下载/yong$ bash yong-tool.sh
yong-tool.sh [OPTION]
  --install        install yong at system
  --install64        install yong64 at system
  --install32        install yong32 at system
  --uninstall        uninstall yong from system
  --select        select yong as default IM
  --sysinfo        display system infomation
yangbin-u2@yangbinu2-virtual-machine:~/下载/yong$ 

用ubuntu安装一个程序,请问到这一步以后该怎么做?
另外为什么用 chmod +x yong-tool.sh 运行,没有反应呢?