ulimit
/ˈjuːˌlɪm.ɪt/
noun — “the system’s polite way of saying ‘don’t eat all the RAM at once.’”
ulimit is a command and system feature in Unix-like operating systems that defines resource limits for processes. It allows administrators and users to set boundaries on various aspects of process execution, such as maximum file size, number of open files, stack size, and CPU time, preventing a single process from consuming all system resources and potentially destabilizing the system.