2020年12月23日
Difference between 2>&-, 2>/dev/null, |&, &>/dev/null and >/dev/null 2>&1
摘要： 2>&- The general form of this one is M>&-, where "M" is a file descriptor number. This will close output for whichever file descriptor is referenced, 阅读全文
posted @ 2020-12-23 09:42 helloweifa 阅读(68) 评论(0) 推荐(0) 编辑