https://blog.youkuaiyun.com/2004v2004zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/2004v2004/article/details/161073517https://blog.youkuaiyun.com/2004v2004/article/details/1610735172004v2004Thu, 14 May 2026 10:19:37 +0800https://blog.youkuaiyun.com/2004v2004/article/details/161073054https://blog.youkuaiyun.com/2004v2004/article/details/1610730542004v2004Thu, 14 May 2026 10:06:48 +0800https://blog.youkuaiyun.com/2004v2004/article/details/153970325https://blog.youkuaiyun.com/2004v2004/article/details/1539703252004v2004Thu, 13 Nov 2025 09:58:46 +0800https://blog.youkuaiyun.com/2004v2004/article/details/150988531https://blog.youkuaiyun.com/2004v2004/article/details/1509885312004v2004Fri, 29 Aug 2025 16:08:35 +0800https://blog.youkuaiyun.com/2004v2004/article/details/150988242https://blog.youkuaiyun.com/2004v2004/article/details/1509882422004v2004Fri, 29 Aug 2025 15:53:59 +0800https://blog.youkuaiyun.com/2004v2004/article/details/150465119https://blog.youkuaiyun.com/2004v2004/article/details/1504651192004v2004Sun, 17 Aug 2025 11:58:51 +0800https://blog.youkuaiyun.com/2004v2004/article/details/145864280https://blog.youkuaiyun.com/2004v2004/article/details/1458642802004v2004Tue, 25 Feb 2025 22:29:30 +0800https://blog.youkuaiyun.com/2004v2004/article/details/141361621https://blog.youkuaiyun.com/2004v2004/article/details/1413616212004v2004Tue, 20 Aug 2024 16:17:27 +0800https://blog.youkuaiyun.com/2004v2004/article/details/135221267https://blog.youkuaiyun.com/2004v2004/article/details/1352212672004v2004Tue, 26 Dec 2023 14:34:07 +0800https://blog.youkuaiyun.com/2004v2004/article/details/134511364https://blog.youkuaiyun.com/2004v2004/article/details/1345113642004v2004Mon, 20 Nov 2023 15:58:38 +0800https://blog.youkuaiyun.com/2004v2004/article/details/134510179https://blog.youkuaiyun.com/2004v2004/article/details/1345101792004v2004Mon, 20 Nov 2023 15:30:39 +0800https://blog.youkuaiyun.com/2004v2004/article/details/131169292https://blog.youkuaiyun.com/2004v2004/article/details/1311692922004v2004Mon, 12 Jun 2023 15:17:26 +0800&1”表示先将标准输出重定向到/dev/null，然后将标准错误重定向到标准输出，由于标准输出已经重定向到了/dev/null，因此标准错误也会重定向到/dev/null，这样日志输出问题就解决了。每条任务调度执行完毕，系统都会将任务输出信息通过电子邮件的形式发送给当前系统用户，这样日积月累，日志信息会非常大，可能会影响系统的正常运行，因此，将每条任务进行重定向处理非常重要。]]>https://blog.youkuaiyun.com/2004v2004/article/details/129126142https://blog.youkuaiyun.com/2004v2004/article/details/1291261422004v2004Mon, 20 Feb 2023 16:12:23 +0800https://blog.youkuaiyun.com/2004v2004/article/details/127222470https://blog.youkuaiyun.com/2004v2004/article/details/1272224702004v2004Sun, 09 Oct 2022 10:44:26 +0800https://blog.youkuaiyun.com/2004v2004/article/details/124930939https://blog.youkuaiyun.com/2004v2004/article/details/1249309392004v2004Mon, 23 May 2022 17:17:42 +0800https://blog.youkuaiyun.com/2004v2004/article/details/124867183https://blog.youkuaiyun.com/2004v2004/article/details/1248671832004v2004Thu, 19 May 2022 17:10:15 +0800https://blog.youkuaiyun.com/2004v2004/article/details/124489719https://blog.youkuaiyun.com/2004v2004/article/details/1244897192004v2004Fri, 29 Apr 2022 10:16:05 +0800https://blog.youkuaiyun.com/2004v2004/article/details/123088435https://blog.youkuaiyun.com/2004v2004/article/details/1230884352004v2004Wed, 23 Feb 2022 13:58:14 +0800https://blog.youkuaiyun.com/2004v2004/article/details/120235372https://blog.youkuaiyun.com/2004v2004/article/details/1202353722004v2004Sat, 11 Sep 2021 11:38:41 +0800https://blog.youkuaiyun.com/2004v2004/article/details/120235146https://blog.youkuaiyun.com/2004v2004/article/details/1202351462004v2004Sat, 11 Sep 2021 11:29:27 +0800