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exec {
    
     
      
      'keep-nginx-running' : 
        user    => 'root',
        unless  => 'ps -x | grep nginx|grep -v grep',
        command => 'systemctl start nginx.service',
        path   => '/usr/bin:/usr/sbin:/sbin:/bin',
    
     
    
     
}
  
    
   
   
    
```html
    
  
     
    
      
exec {
    
      
       
      'keep-nginx-running' : 
        user => 'root',
        unless => 'ps -x | grep nginx|grep -v grep',
        command => 'systemctl start nginx.service',
        path => '/usr/bin:/usr/sbin:/sbin:/bin',
    
      
    
      
}