linux系统自带的词库文件。用于拼写检查，创建自己的词库。以文本形式打开。 words is a standard file on Unix and Unix-like operating systems, and is simply a newline-delimited list of dictionary words. It is used, for instance, by spell-checking programs. The words file is usually stored in /usr/share/dict/words or /usr/dict/words.