求助关于文本中字段替换问题

笑着爱你

我有个软件的配置文件，里面是分不同场景的，但是不同场景中有相同的字段，我想某个场景下的字段值，但是其他场景中也有相同的字段，这样导致所有场景中相同的字段都被替换，想问问大家有没有什么好办法。
配置文件如下

[场景1]
ProcessCount = 1
MKMThreadCount = 32
FolderNum = 32
lev2FolderNum = 512
lev3FolderNum = 64
WriteFilePath = /home/hms/data/c/vod_pub_d/400k/
TsFileNum = 50
MediaFileType = mdn123ts
WriteMediaFileSize = 409600

[场景2]
ProcessCount = 1
MKMThreadCount = 4500
FolderNum = 32
lev2FolderNum = 16
lev3FolderNum = 64
ReadFilePath =/home/hms/data/c/vod_pub_d/400k/
ReadUserCaps = 18
ReadKBitRate = 2000
ReadvKbs = 2048
TsFileNum = 50
MediaFileType = mdn123ts

WriteChannelNum = 200
WriteFilePath = /home/hms/data/d/rec_pub_d/CDN_2/
WriteUserCaps = 18
WriteKBitRate = 2000
WriteMediaFileSize = 409600
WriteDIOFlag = true

其中把WriteMediaFileSize = 409600 替换成 WriteMediaFileSize = 2097152  
sed -i 's/WriteMediaFileSize = 409600/WriteMediaFileSize = 2097152/g',但是这样一来两个场景的这个字段就都被替换了，我只想替换场景1中的这个字段。

todayhero

@笑着爱你


你可以使用sed查找文本功能确定要修改的范围再操作了。

Herowinter

回复 1# 笑着爱你

1. sed '/\[场景1\]/{:1;N;s/WriteMediaFileSize = 409600/WriteMediaFileSize = 2097152/;T1}' i
   
2. [场景1]
   
3. ProcessCount = 1
   
4. MKMThreadCount = 32
   
5. FolderNum = 32
   
6. lev2FolderNum = 512
   
7. lev3FolderNum = 64
   
8. WriteFilePath = /home/hms/data/c/vod_pub_d/400k/
   
9. TsFileNum = 50
   
10. MediaFileType = mdn123ts
    
11. WriteMediaFileSize = 2097152
    
12. 
    
13. [场景2]
    
14. ProcessCount = 1
    
15. MKMThreadCount = 4500
    
16. FolderNum = 32
    
17. lev2FolderNum = 16
    
18. lev3FolderNum = 64
    
19. ReadFilePath =/home/hms/data/c/vod_pub_d/400k/
    
20. ReadUserCaps = 18
    
21. ReadKBitRate = 2000
    
22. ReadvKbs = 2048
    
23. TsFileNum = 50
    
24. MediaFileType = mdn123ts
    
25. 
    
26. WriteChannelNum = 200
    
27. WriteFilePath = /home/hms/data/d/rec_pub_d/CDN_2/
    
28. WriteUserCaps = 18
    
29. WriteKBitRate = 2000
    
30. WriteMediaFileSize = 409600
    
31. WriteDIOFlag = true

复制代码

expert1

月经帖