同一段shell处理Win 文本和 *nux文本的不同结果，求分析！！！

fenginf

这是处理win文本的结果

1. ShllyXZ shell # cat t1.txt
   
2. 2011-4-1:5
   
3. 2011-4-2:7
   
4. 2011-4-3:3456
   
5. ShllyXZ shell # cat t2.txt
   
6. 2011-4-1:3
   
7. 2011-4-2:4
   
8. 2011-4-3:5
   
9. ShllyXZ shell # cat s1
   
10. #!/bin/bash
    
11. i=1
    
12. while [ "$i" -le 4 ]
    
13. do
    
14.   va=`awk 'BEGIN{FS=":"}/\<2011-4-'$i'\>/{print $2}' t1.txt`
    
15.   vb=`awk 'BEGIN{FS=":"}/\<2011-4-'$i'\>/{print $2}' t2.txt`
    
16.   echo "this is va:$va and vb:$vb"
    
17.   echo "this is a+b=$va+$vb"
    
18.   echo "this is va:$va"
    
19. 
    
20.   i=$(($i+1))
    
21. done
    
22. ShllyXZ shell # ./s1
    
23. and vb:3a:5                        # 其实我知道是换行符的结果，但是不明白为什么会产生这种输出？
    
24. +3is is a+b=5
    
25. this is va:5
    
26. and vb:4a:7
    
27. +4is is a+b=7
    
28. this is va:7
    
29. and vb:5a:3456
    
30. +5is is a+b=3456
    
31. this is va:3456
    
32. this is va: and vb:
    
33. this is a+b=+
    
34. this is va:
    

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下面是处理*nix文本的结果，是正常的：

1. ShllyXZ shell # cat t1
   
2. 2011-4-1:5
   
3. 2011-4-2:7
   
4. 2011-4-3:22789
   
5. 2011-4-4:38275
   
6. 2011-4-5:38200
   
7. 2011-4-6:40064
   
8. 2011-4-7:38565
   
9. 2011-4-8:38561
   
10. 2011-4-9:36938
    
11. 2011-4-10:6480ShllyXZ shell # cat t2
    
12. 2011-4-1:5
    
13. 2011-4-2:18
    
14. 2011-4-3:23079
    
15. 2011-4-4:0
    
16. 2011-4-5:38126
    
17. 2011-4-6:36643
    
18. 2011-4-7:38522
    
19. 2011-4-8:38341
    
20. 2011-4-9:37817
    
21. 2011-4-10:6347
    
22. ShllyXZ shell # cat s1
    
23. #!/bin/bash
    
24. i=1
    
25. while [ "$i" -le 4 ]
    
26. do
    
27.   va=`awk 'BEGIN{FS=":"}/\<2011-4-'$i'\>/{print $2}' t1`
    
28.   vb=`awk 'BEGIN{FS=":"}/\<2011-4-'$i'\>/{print $2}' t2`
    
29.   echo "this is va:$va and vb:$vb"
    
30.   echo "this is a+b=$va+$vb"
    
31.   echo "this is va:$va"
    
32. 
    
33.   i=$(($i+1))
    
34. done
    
35. ShllyXZ shell # ./s1
    
36. this is va:5 and vb:5
    
37. this is a+b=5+5
    
38. this is va:5
    
39. this is va:7 and vb:18
    
40. this is a+b=7+18
    
41. this is va:7
    
42. this is va:22789 and vb:23079
    
43. this is a+b=22789+23079
    
44. this is va:22789
    
45. this is va:38275 and vb:0
    
46. this is a+b=38275+0
    
47. this is va:38275
    

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