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我在bash的一個命令中偶然發現了一個有趣的點,我無法想象爲什麼發生了這種差異。 很遺憾,我沒有執行對谷歌,檔案等任何搜索 - 因爲我只是不知道該怎麼尋找...爲什麼bash的行爲會因爲只改變行的解析器的調用方式而有所不同?
這裏是我的問題的一些測試數據:http://nopaste.info/fdec0d967d_nl.html 這裏兩提示和不同的輸出 - 什麼我打算做的是看到開始和示例數據結束:
2014/10/09 14:49:01 HilgenbF ~/working_files/_temp$ cat test.txt | (head -n 10; tail -n 10)
Started at : Samstag, 4. Oktober 2014, 23:22:43
Started at : Donnerstag, 2. Oktober 2014, 15:18:29
Started at : Samstag, 27. September 2014, 23:22:38
Started at : Montag, 22. September 2014, 21:00:58
Started at : Samstag, 4. Oktober 2014, 09:03:38
Started at : Samstag, 27. September 2014, 11:28:32
Started at : Samstag, 20. September 2014, 10:31:31
Started at : Samstag, 13. September 2014, 10:33:12
Started at : Samstag, 6. September 2014, 10:03:59
Started at : Montag, 1. September 2014, 09:01:33
Started at : Samstag, 13. September 2014, 23:23:16
Started at : Samstag, 4. Oktober 2014, 23:22:42
Started at : Dienstag, 30. September 2014, 18:45:10
Started at : Samstag, 27. September 2014, 23:22:38
Started at : Samstag, 20. September 2014, 23:30:08
Started at : Samstag, 4. Oktober 2014, 23:22:42
Started at : Mittwoch, 1. Oktober 2014, 10:09:00
Started at : Samstag, 27. September 2014, 23:22:38
Started at : Sonntag, 21. September 2014, 10:26:58
Started at : Montag, 22. September 2014, 09:10:42
2014/10/09 14:49:05 HilgenbF ~/working_files/_temp$ cat test.txt | (tail -n 10; head -n 10)
Started at : Samstag, 13. September 2014, 23:23:16
Started at : Samstag, 4. Oktober 2014, 23:22:42
Started at : Dienstag, 30. September 2014, 18:45:10
Started at : Samstag, 27. September 2014, 23:22:38
Started at : Samstag, 20. September 2014, 23:30:08
Started at : Samstag, 4. Oktober 2014, 23:22:42
Started at : Mittwoch, 1. Oktober 2014, 10:09:00
Started at : Samstag, 27. September 2014, 23:22:38
Started at : Sonntag, 21. September 2014, 10:26:58
Started at : Montag, 22. September 2014, 09:10:42
我知道我可以簡單地使用第一工作示例中,但我真的很好奇如何bash的作品:)
謝謝大家! Florian
哇 - thx很多@chepner - 這是快速:-) http://stackoverflow.com/a/26278987/4091332 – Fet32 2014-10-09 13:16:56