const child_process = require('child_process');
var test = child_process.exec('ip link show', function(error, stdout, stderr) {
    var regstate =/^.*?:\s*(.*?):.*state\s*([A-Z]+).*/;
    var regUP = /state UP/;
    var triger_string =false;
    stdout.split('\n').forEach((element, index) =>{
        if(index%2 == 0)
        {
            if(element.search(regstate) != -1){
                if((element.startsWith('w' , 3)) ){
                    if(element.search(regUP) != -1){
                        triger_string= true;
                    }
                }
            }
        }
   })
console.log(triger_string);
return triger_string;
})