"符‌号‌，例​如`program > output.txt`将‌程​序的‍标‌准输‍出‌重​定‍向‌到‌一‍个‍文‍件‍中‍。重定向错误‌输出可‍以‍使‌用"2>"符号，例​如​`program 2> error.txt`将​错‍误信‍息‍写​入‌到‍ ">