https://www.unix.com/shell-programming-and-scripting/125947-difference-between-dev-null-2-1-2-1-dev-null.htmlhttps://www.unix.com/shell-programming-and-scri
阅读背景：
【问题】Difference between ">/dev/null 2>&1" and "2>&1 >/dev/null"
来源：互联网
分享到：
