this should do:

tracerute = require('traceroute'); 
traceroute.trace('4.69.155.254', function (err,hops) { 
    if (err) console.error(err)
    else hops.forEach(function(hop, index){
       console.log(index + 1, hop)
    }); 
});


if you whant to transform your data and save the transformed result:

tracerute = require('traceroute'); 
traceroute.trace('4.69.155.254', function (err,hops) { 
    if (err) console.error(err)
    else {
      hops = hops.forEach(function(hop, index){
         hop.lineno = index +1
      });
    } 
});


regarding the db: for storing this kind of data all dbs would fit. it 
depends more on your other requirements like performance, scalability, SQL 
or not, realtional algebra or map/reducing, reliability, persistence and so 
on.


Am Dienstag, 13. August 2013 12:47:19 UTC+2 schrieb Mattias Larsson:
>
> Hi, 
>
> How should I think (and do) to add numbers to each hop (line) on my 
> traceroute.
>
> Here is my script (it's example script from traceroute npm package)
>
> traceroute = require('traceroute');
> traceroute.trace('4.69.155.254', function (err,hops) {
>   if (!err) console.log(hops);});
>
>
> And output is like this
>
> [ { '66.97.5.249': [ 43.206 ] },
>   { '216.182.7.102': [ 43.575 ] },
>   { '216.182.7.165': [ 44.538 ] },
>   { '216.182.7.253': [ 44.846 ] },
>   { '4.53.88.197': [ 57.735 ] },
>   { '4.69.155.254': [ 58.618 ] } ]
>
>
> I would like to change how data is showing, with adding an line number. 
> like this.
>
> [ { '1', '66.97.5.249': [ 43.206 ] },
>   { '2', '216.182.7.102': [ 43.575 ] },
>   { '3', '216.182.7.165': [ 44.538 ] },
>   { '4', '216.182.7.253': [ 44.846 ] },
>   { '5', '4.53.88.197': [ 57.735 ] },
>   { '6', '4.69.155.254': [ 58.618 ] } ]
>
> I think I need to calculate how many hops it is, and then do a for loop to 
> add the number to each line?!
>
>
> I'm also going to add this output data into a database. I don't know which 
> database to use. I appreciate if someone can recommend some database I 
> should use. MongoDB, Redis, Sqlite?
>
>
> Regards,
> Mattias  
>
>
>
>

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