求助！提取文件指定文本替换到文件中指定地方[已解决]

Herowinter

回复 20# xiao_244
做到这一步的时候，前面的结果是这里面的Test String.

   

xiao_244

回复 21# Herowinter

非常感谢！终于明白了？

reb00t

蹩脚php来了。。

1. <?php
   
2. 
   
3. 
   
4. 
   
5. 
   
6. $f = fopen ("200.txt", "r");
   
7.     while ($line= fgets ($f)) {
   
8. 
   
9.        if(preg_match('/0x00000005/', $line)){
   
10.            $mac=explode("\"", $line);
    
11.            $pa1='/:/';
    
12.            $newmac=preg_replace($pa1, "",  $mac[3]);
    
13.            $newmac="12345".$newmac;
    
14.            print $line;
    
15. 
    
16.      }elseif (preg_match('/0x00000019/', $line)) {
    
17.            $pa2='/\"\"/';
    
18.            print preg_replace($pa2, "\"$newmac\"", $line);
    
19. 
    
20.      }else{
    
21. 
    
22.         print $line;
    
23.      }
    
24.    
    
25.    
    
26. }
    
27.     fclose ($f);
    
28. ?>
    
29. 
    
30. 
    
31. 
    
32. 
    
33. 
    
34. 
    
35. 
    
36. 
    
37. 结果：
    
38. obj.id = "0x00000005" ; obj.value = "08:AC:86:1E:98:43";
    
39. obj.id = "0x00000006" ; obj.value = "08:AC:86:1E:98:46";
    
40. obj.id = "0x00000019" ; obj.value = "1234508AC861E9843";
    
41. obj.id = "0x00000020" ; obj.value = "08:AC:86:1E:98:21";
    
42. 
    
43. 
    
44. 
    
45. 
    
46. [Finished in 1.9s]
    
47. 
    
48. 
    
49. 操作文本：
    
50. 
    
51. obj.id = "0x00000005" ; obj.value = "08:AC:86:1E:98:43";
    
52. obj.id = "0x00000006" ; obj.value = "08:AC:86:1E:98:46";
    
53. obj.id = "0x00000019" ; obj.value = "";
    
54. obj.id = "0x00000020" ; obj.value = "08:AC:86:1E:98:21";

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xiao_244

回复 21# Herowinter

请再帮我分析下：

obj.id = "0x00000005" ; obj.value = "08:AC:86:1E:98:43";
obj.id = "0x00000006" ; obj.value = "08:AC:86:1E:98:46";
中间还有一些行
obj.id = "0x00000019" ; obj.value = "";
obj.id = "0x00000020" ; obj.value = "08:AC:86:1E:98:21";
obj.id = "0x00000021" ; obj.value = "hore"
读取ＭＡＣ地址的前8位都替换成需要的22:33:44变成：
obj.id = "0x00000005" ; obj.value = "22:33:44:1E:98:43";
obj.id = "0x00000006" ; obj.value = "22:33:44:1E:98:46";
……
obj.id = "0x00000019" ; obj.value = "";
obj.id = "0x00000020" ; obj.value = "22:33:44:1E:98:21";
obj.id = "0x00000021" ; obj.value = "hore"
　
这个要怎么写？？？？？谢谢！！　

我现在的办法是出一个新的ＭＡＣ地址我就把前8位写成
sed -i s/08:AC:86/22:33:44/g mac.txt
sed -i s/48:A0:65/22:33:44/g mac.txt
一段时间之后ＭＡＣ就变，现在都写二十来条了！！

Herowinter

回复 24# xiao_244

1. sed -ir 's/([0-9A-Fa-f]{2}:){3}/22:33:44:/' mac.txt

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xiao_244

回复 25# Herowinter
WAP(Dopra Linux) # cat mac.txt
obj.id = "0x00000008" ; obj.value = "21500820033GE3009304";
obj.id = "0x00000009" ; obj.value = "";
obj.id = "0x0000000a" ; obj.value = "D8:49:0B:3D:74:2D";
obj.id = "0x0000000b" ; obj.value = "E0:26:31:00:70:85";
obj.id = "0x00000022" ; obj.value = "";
obj.id = "0x00000023" ; obj.value = "";
obj.id = "0x00000024" ; obj.value = "";
obj.id = "0x0000000c" ; obj.value = "D8:49:0B:3D:74:2E";
obj.id = "0x0000000d" ; obj.value = "D8:49:0B:3D:74:2F";
obj.id = "0x0000000e" ; obj.value = "D8:49:0B:3D:74:30";

WAP(Dopra Linux) # sed -r 's/([0-9A-Fa-f]{2}:){3}/22:33:44:/' mac.txt

obj.id = "0x00000008" ; obj.value = "21500820033GE3009304";
obj.id = "0x00000009" ; obj.value = "";
obj.id = "0x0000000a" ; obj.value = "22:33:44:3D:74:2D";
obj.id = "0x0000000b" ; obj.value = "22:33:44:00:70:85";
obj.id = "0x00000022" ; obj.value = "";
obj.id = "0x00000023" ; obj.value = "";
obj.id = "0x00000024" ; obj.value = "";
obj.id = "0x0000000c" ; obj.value = "22:33:44:3D:74:2E";
obj.id = "0x0000000d" ; obj.value = "22:33:44:3D:74:2F";
obj.id = "0x0000000e" ; obj.value = "22:33:44:3D:74:30";

我没说清楚！！！其实是把所有MAC前8位和0x0000000a那行的前8位相同的，都替换成22:33:44

我现在自己写成:sed -ir '/0x0000000b/!s/"..:..:../"22:33:44/' mac.txt
WAP(Dopra Linux) # sed -r '/0x0000000b/!s/"..:..:../"22:33:44/' mac.txt

obj.id = "0x00000008" ; obj.value = "21500820033GE3009304";
obj.id = "0x00000009" ; obj.value = "";
obj.id = "0x0000000a" ; obj.value = "22:33:44:3D:74:2D";
obj.id = "0x0000000b" ; obj.value = "E0:26:31:00:70:85";
obj.id = "0x00000022" ; obj.value = "";
obj.id = "0x00000023" ; obj.value = "";
obj.id = "0x00000024" ; obj.value = "";
obj.id = "0x0000000c" ; obj.value = "22:33:44:3D:74:2E";
obj.id = "0x0000000d" ; obj.value = "22:33:44:3D:74:2F";
obj.id = "0x0000000e" ; obj.value = "22:33:44:3D:74:30";
现在基本还可以用， 可是如果以后文件里出现两个以上前8位不同的就用不了了~！

Herowinter

回复 26# xiao_244

没环境，手写的，有错莫怪，我自己也不是非常有信心。

1. m=`sed -r '0,/0x0000000a/{//s/.*= "(([0-9A-Fa-f]{2}:){3}).*/\1/}' mac.txt`; sed -i "s/$m/22:33:44:/" mac.txt

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Herowinter

回复 26# xiao_244

楼上的忘了加-n了,有点问题,我刚测了下,改成这样应该就可以了.

1. m=`sed -nr '0,/0x0000000a/{//s/.*= "(([0-9A-Fa-f]{2}:){3}).*/\1/p}' mac.txt`; sed "s/$m/22:33:44:/" mac.txt
   
2. obj.id = "0x00000008" ; obj.value = "21500820033GE3009304";
   
3. obj.id = "0x00000009" ; obj.value = "";
   
4. obj.id = "0x0000000a" ; obj.value = "22:33:44:3D:74:2D";
   
5. obj.id = "0x0000000b" ; obj.value = "E0:26:31:00:70:85";
   
6. obj.id = "0x00000022" ; obj.value = "";
   
7. obj.id = "0x00000023" ; obj.value = "";
   
8. obj.id = "0x00000024" ; obj.value = "";
   
9. obj.id = "0x0000000c" ; obj.value = "22:33:44:3D:74:2E";
   
10. obj.id = "0x0000000d" ; obj.value = "22:33:44:3D:74:2F";
    
11. obj.id = "0x0000000e" ; obj.value = "22:33:44:3D:74:30";

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直接修改mac.txt加-i

1. m=`sed -nr '0,/0x0000000a/{//s/.*= "(([0-9A-Fa-f]{2}:){3}).*/\1/p}' mac.txt`; sed -i "s/$m/22:33:44:/" mac.txt

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fxpbupt

下面截图里的工具是神马？求出处

回复 21# Herowinter


   

Herowinter

回复 29# fxpbupt

http://bbs.chinaunix.net/thread-4120164-1-1.html

个人觉得regex101比较好用.