First, I want to apologise about my english, itīs realy bad. I hope that it will be clear enought for understending essence of my problem. Iīm a new in Linux programming and Iīm trying to improve that. My little program has to detect whether is system connected on the interner or not. I supose that there is simple solution (in Win there is RAS library, but in Lin I donīt know where to look). I would appreciate if someone could answer me. Thanks.