> STDIN.methods
=> ["collect", "inspect", "send", "write_nonblock", "all?", "<<", "close", "clone", "entries", "reopen", "public_methods", "tell", "__send__", "equal?", "freeze", "fsync", "detect", "zip", "puts", "rewind", "pid", "methods", "instance_eval", "readpartial", "map", "display", "any?", "syswrite", "tty?", "sort", "dup", "object_id", "stat", "include?", "seek", "min", "instance_variables", "extend", "binmode", "instance_of?", "eql?", "sync", "find_all", "pos", "each", "gets", "each_line", "hash", "id", "closed?", "singleton_methods", "inject", "write", "sync=", "readchar", "close_read", "pos=", "taint", "sort_by", "sysread", "frozen?", "instance_variable_get", "max", "printf", "kind_of?", "sysseek", "select", "to_a", "lineno", "readline", "each_byte", "eof", "type", "protected_methods", "partition", "read", "lineno=", "ungetc", "==", "close_write", "===", "fileno", "grep", "instance_variable_set", "print", "is_a?", "ioctl", "respond_to?", "read_nonblock", "reject", "to_s", "readlines", "class", "flush", "getc", "tainted?", "=~", "private_methods", "isatty", "member?", "__id__", "nil?", "untaint", "find", "to_io", "each_with_index", "putc", "method", "fcntl", "to_i", "eof?"]