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Ok so it's rellay useless line and I sorry for that, furthermore that's nothing optimized at all...
At the beginning I didn't managed by using netstat -p to print out which process was handling that open port 4444, I realize at the end I was not root and security restrictions applied ;p
It's nevertheless a (good ?) way to see how ps(tree) works, as it acts exactly the same way by reading in /proc
So for a specific port, this line returns the calling command line of every thread that handle the associated socket
I find it ugly & sexy at the same time isn't it ?