FILE *pf = popen("/home/norco/wh7/WH7_TVM/bin/getEventNo.sh","r");
char res[10240];
fread(res,10240,1,pf);
printf("printf == %s\n",res);
pclose(pf);

getEventNo.sh:

cat /proc/bus/input/devices

通过shell文件获取到devices文件内容后，将内容返回给C++代码。

ps：运行代码前要给shell文件加执行权限：chmod +xgetEventNo.sh