windows – 批处理脚本,用于在文本文件中打印上一行和下一行搜索

发布时间：2020-12-13 20:46:33 所属栏目：Windows 来源：网络整理

导读：我有一个批处理脚本,它将整行搜索字符串打印到一个文本文件中. for %%i in (log.txt) do (FINDSTR /G:pattern.txt %%i output.txt) 例： pattern.txt包含搜索字符串ERROR,以下是log.txt中的示例文本 2013-06-30 02:17:55,562 INFO Service started2013-06-30

我有一个批处理脚本,它将整行搜索字符串打印到一个文本文件中.

for %%i in (log.txt) do (
FINDSTR /G:pattern.txt %%i >> output.txt
)

例：
pattern.txt包含搜索字符串ERROR,以下是log.txt中的示例文本

2013-06-30 02:17:55,562 INFO   Service started
2013-06-30 02:17:55,578 INFO   Sending mail...
2013-06-30 02:17:55,578 DEBUG  Element value: 1
2013-06-30 02:17:55,578 ERROR  error occurred and message is ""
2013-06-30 02:17:55,578 DEBUG  bit version: 8
2013-06-30 02:17:55,578 INFO   Service stopped

只要在log.txt中找到字符串ERROR,上面的批处理脚本就会打印每行文本.所以,output.txt看起来会有如下所示的行

2013-06-30 02:17:55,578 ERROR  error occurred and message is ""

如何只打印上一行和下一行搜索字符串,如下所示：

2013-06-30 02:17:55,578 DEBUG  bit version: 8

提前致谢.

@echo off
setlocal EnableDelayedExpansion
rem Assemble the list of line numbers
set numbers=
for /F "delims=:" %%a in ('findstr /I /N /C:"error occurred" log.txt') do (
   set /A before=%%a-1,after=%%a+1
   set "numbers=!numbers!!before!: !after!: "
)
rem Search for the lines
(for /F "tokens=1* delims=:" %%a in ('findstr /N "^" log.txt ^| findstr /B "%numbers%"') do echo %%b) > output.txt

（编辑：李大同）

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