The hard limit of the file descriptors that can be opened by this process will become #include #include #include int main() { struct rlimit limit; limit.rlim_cur = 10; limit.rlim_max = 20; if(setrlimit(RLIMIT_NOFILE,&limit) != 0) perror("setrlimit"); if(getrlimit(RLIMIT_NOFILE,&limit) != 0) perror("getrlimit"); printf("%lun",limit.rlim_cur); printf("%lun",limit.rlim_max); return 0; }