auto s = Director::getInstance()->getWinSize();
     
    auto sun = ParticleSun::create();
    sun->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    sun->setPosition(Vec2(s.width / 2 -100, s.height / 2));
     
    sun->setTotalParticles(130);
    sun->setLife(5.0f);
     
    this->addChild(sun);
    // timers
     
     
    auto fire = ParticleFire::create();
    fire->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    fire->setPosition(Vec2(s.width / 2 + 50, s.height / 2));
     
    fire->setTotalParticles(130);
    fire->setLife(5.0f);
     
    this->addChild(fire);
     
    auto fireworks = ParticleFireworks::create();
    fireworks->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    fireworks->setPosition(Vec2(s.width / 2 + 50, s.height / 2 - 200));
     
    fireworks->setTotalParticles(130);
    fireworks->setLife(5.0f);
     
    this->addChild(fireworks);
     
     
    auto galaxy = ParticleGalaxy::create();
    galaxy->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    galaxy->setPosition(Vec2( 50, s.height / 2 + 200));
     
    galaxy->setTotalParticles(130);
    galaxy->setLife(5.0f);
     
    this->addChild(galaxy);
     
     
 
    auto flower = ParticleFlower::create();
    flower->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    flower->setPosition(Vec2( 250, s.height / 2 + 200));
     
    flower->setTotalParticles(130);
    flower->setLife(5.0f);
     
    this->addChild(flower);
     
    //流星
    auto meteor = ParticleMeteor::create();
    meteor->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    meteor->setPosition(Vec2( 250, 20));
     
    meteor->setTotalParticles(130);
    meteor->setLife(5.0f);
     
    this->addChild(meteor);
     
     
    //旋涡
    auto spiral = ParticleSpiral::create();
    spiral->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    spiral->setPosition(Vec2( 450, 40));
     
    spiral->setTotalParticles(130);
    spiral->setLife(5.0f);
     
    this->addChild(spiral);
    
    //爆炸
    auto explosion = ParticleExplosion::create();
    explosion->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    explosion->setPosition(Vec2( 50, 440));
     
    explosion->setTotalParticles(130);
    explosion->setLife(5.0f);
     
    this->addChild(explosion);
     
     
    //烟雾
    auto smoke = ParticleSmoke::create();
    smoke->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    smoke->setPosition(Vec2( 450, 640));
     
    smoke->setTotalParticles(130);
    smoke->setLife(5.0f);
     
    this->addChild(smoke);
     
    //雪
    auto snow = ParticleSnow::create();
    snow->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    snow->setPosition(Vec2( 450, 840));
     
    snow->setTotalParticles(130);
    snow->setLife(5.0f);
     
    this->addChild(snow);
 
    //雨
    auto rain = ParticleRain::create();
    rain->setTexture(Director::getInstance()->getTextureCache()->addImage(fire.png));
    rain->setPosition(Vec2( 450, 940));
     
    rain->setTotalParticles(130);
    rain->setLife(5.0f);
     
    this->addChild(rain);

假设你发现前台运行的一个程序需要很长的时间,但是需要干其他的事情,你就可以用 Ctrl-Z ,终止这个程序,然后可以看到系统提示:
[1]+ Stopped /root/bin/rsync.sh
然后我们可以把程序调度到后台执行:(bg 后面的数字为作业号)
#bg 1
[1]+ /root/bin/rsync.sh &
用 jobs 命令查看正在运行的任务:
#jobs
[1]+ Running /root/bin/rsync.sh &
如果想把它调回到前台运行,可以用
#fg 1
/root/bin/rsync.sh
这样,你在控制台上就只能等待这个任务完成了.
& 将指令丢到后台中去执行
[ctrl]+z 将前台任务丢到后台中暂停
jobs 查看后台的工作状态
fg %jobnumber 将后台的任务拿到前台来处理
bg %jobnumber 将任务放到后台中去处理
kill 管理后台的任务
命令运行时使用CTRL+Z，强制当前进程转为后台，并使之停止。
1. 使进程恢复运行（后台）
（1）使用命令bg
Example：
zuii@zuii-desktop：~/unp/tcpcliserv$ ./tcpserv01
*这里使用CTRL+Z，此时serv01是停止状态*
[1]+ Stopped ./tcpserv01
zuii@zuii-desktop：~/unp/tcpcliserv$ bg
[1]+ ./tcpserv01 & *此时serv01运行在后台*
zuii@zuii-desktop：~/unp/tcpcliserv$
（2）如果用CTRL+Z停止了几个程序呢？
Example：
zuii@zuii-desktop：~/unp/tcpcliserv$ jobs
[1]- Running ./tcpserv01 &
[2]+ Stopped ./tcpcli01 127.0.0.1
zuii@zuii-desktop：~/unp/tcpcliserv$ bg %1
bash： bg：任务 1 已转入后台 *后台运行*
2. 使进程恢复至前台运行
Example：
zuii@zuii-desktop：~/unp/tcpcliserv$ ./tcpserv04
[1]+ Stopped ./tcpserv04
zuii@zuii-desktop：~/unp/tcpcliserv$ fg
。/tcpserv04
总结：
（1） CTRL+Z停止进程并放入后台
（2） jobs 显示当前暂停的进程
（3） bg %N 使第N个任务在后台运行（%前有空格）
（4） fg %N 使第N个任务在前台运行
默认bg，fg不带%N时表示对最后一个进程操作！