批处理如何让输出的信息始终保持在文件第一行（首行）？

merlyn

一直困扰的问题，如何在使用重定向功能生成的Log日志，最新的保持在第一行。请教有何方法，并保持日志文件的属性如创建时间。

1. ::
   
2. :: =================================================
   
3. ::  Check the physical harddisk on HP DL388 and X64
   
4. ::  in case any error or fail
   
5. ::  Need to run with HP Array Configuration Utility CLI
   
6. :: =================================================
   
7. ::
   
8. @echo off
   
9. 
   
10. "C:\Program Files (x86)\Compaq\Hpacucli\bin\hpacucli.exe" ctrl slot=0 pd all show > zPdfailinfo.log
    
11. 
    
12. find "Fail" zPdfailinfo.log
    
13. 
    
14. if %ERRORLEVEL% == 0 (goto zNotify)
    
15. 
    
16. find "Error" zPdfailinfo.log
    
17. 
    
18. if %ERRORLEVEL% == 0 (goto zNotify) else (goto zExit)
    
19. 
    
20. 
    
21. :zExit
    
22. @ECHO.Running at %date% %time:~0,5% with no error >> zHDcheck.log
    
23. exit /B
    
24. 
    
25. :zNotify
    
26. @ECHO.Running at %date% %time:~0,5% with error, pls check >> zHDcheck.log
    
27. zSendmail.vbs
    

复制代码

zHDcheck.log
Running at 2015-10-25 Sun  9:35 with no error
Running at 2015-10-26 Mon  9:35 with no error
Running at 2015-10-27 Tue  9:35 with no error
Running at 2015-10-28 Wed  9:35 with no error

期望：
zHDcheck.log
Running at 2015-10-28 Wed  9:35 with no error
Running at 2015-10-27 Tue  9:35 with no error
Running at 2015-10-26 Mon  9:35 with no error
Running at 2015-10-25 Sun  9:35 with no error

DAIC

1. ::
   
2. :: =================================================
   
3. ::  Check the physical harddisk on HP DL388 and X64
   
4. ::  in case any error or fail
   
5. ::  Need to run with HP Array Configuration Utility CLI
   
6. :: =================================================
   
7. ::
   
8. @echo off
   
9. "C:\Program Files (x86)\Compaq\Hpacucli\bin\hpacucli.exe" ctrl slot=0 pd all show > zPdfailinfo.log
   
10. type zHDcheck.log > zHDcheck_temp.log
    
11. findstr "Fail Error" zPdfailinfo.log && goto zNotify || goto zExit
    
12. 
    
13. :zExit
    
14. echo Running at %date% %time:~0,5% with no error > zHDcheck.log
    
15. type zHDcheck_temp.log >> zHDcheck.log
    
16. exit /b
    
17. 
    
18. :zNotify
    
19. echo Running at %date% %time:~0,5% with error, pls check > zHDcheck.log
    
20. type zHDcheck_temp.log >> zHDcheck.log
    
21. zSendmail.vbs
    

复制代码

merlyn

回复 2# DAIC

谢谢楼上回复，提供思路。 type 命令改成 copy，提升了一点效率。

1. "C:\Program Files (x86)\Compaq\Hpacucli\bin\hpacucli.exe" ctrl slot=0 pd all show > zPdfailinfo.log
   
2. 
   
3. copy /y zHDcheck.log zHDcheck_temp.log
   
4. 
   
5. findstr "Fail Error" zPdfailinfo.log && goto zNotify || goto zExit
   
6. 
   
7. :zExit
   
8. echo Running at %date% %time:~0,5% with no error > zHDcheck.log
   
9. copy /y zHDcheck.log + zHDcheck_temp.log
   
10. del /q "zHDcheck_temp.log"
    
11. exit /b
    
12. 
    
13. :zNotify
    
14. echo Running at %date% %time:~0,5% with error, pls check > zHDcheck.log
    
15. copy /y zHDcheck.log + zHDcheck_temp.log
    
16. del /q "zHDcheck_temp.log"
    
17. zSendmail.vbs

复制代码

DAIC

回复 3# merlyn


在你的实际环境里面copy比type快多少？日志文件的体积大概是多少？
请分享一下你的试验数据吧，谢谢。

merlyn

回复 4# DAIC

简单测试了几组数据并验证
LOG文件 35KB 运行时间0.50s左右，COPY比TYPE少0.01
LOG文件 1500KB TYPE 运行时间1.1s左右，COPY 0.8-0.9s

总体测试感觉，LOG文件越大，COPY命令比TYPE效率越高。