nohup sends eof (or some other data) info my app when running recursively. How to make it stop or not send at all?

The fix for that is to fix your application.

nohup doesn't send anything to anyone. Your application on the other hand is assuming that stdin is a valid, open file descriptor. It should be checking the return code of whatever primitive it is using to get the data from standard input, and react accordingly if the input stream is found to be closed or invalid.

Since you say cin, I'm going to assume you're coding in C++. This is a safe way of getting strings from std::cin

void get_input() { std::cout << "getting input" << std::endl; std::string input; while (std::cin >> input) { // Good, got something from cin std::cout << " * " << input << std::endl; } std::cout << "out of input loop" << std::endl; std::cout << std::cin.eof() << std::endl; std::cout << std::cin.bad() << std::endl; } 

This is a bad way of getting user input:

void bad_input() { std::cout << "getting input" << std::endl; std::string input; while (!std::cin.bad()) { std::cin >> input; // BAD: not checking if the extractor succeeded std::cout << input << std::endl; // do stuff } // Not reached if `std::cin` reaches EOF std::cout << "out of input loop" << std::endl; } 

Since a stream at eof isn't bad(), this will loop forever once cin reaches OEF. There are many variations for this (both good and bad versions), and similar problems can arise in plain C (and many other languages) for similar reasons.