原文:$ echo 2 * 3 > 5 is a valid inequality. there would be a new file, with the name 5, containing "2", the names of all files in your current directory, and then the string 3 is a valid inequality.
問題：
上述命令執行后，生成名為5的文件，文件里的內容是" 2 加上 當前目錄的所有文件名列表 加上 3"，這裡都能理解。為什麼" is a valid inequality."也會被寫進文件里呢。
