[求助]一个有关awk的应用

紫OS琨

我现在有一个文件，内容如下：


2011-02-08 weru  239874        2394
2011-02-09 35          234                eoir
2011-02-10 soiwo 235433        2fu9
2011-02-08 joi   jfw                cowq

需要按第一域把记录分到相应的单独的文本文件中去。
比如第一域时间如果等于2011-02-08，则把相应记录放到名为2011-02-08的文件中去。求代码～～～！

yinyuemi

回复 1# 紫OS琨

1. awk '{print >$1".txt"}' urfile

复制代码

251995427

yinyuemi 发表于 2011-06-28 22:22

这个第四行为什么没有把第一行的覆盖掉？

yinyuemi

回复 3# 251995427


   

print items > output-file
    This type of redirection prints the items onto the output file output-file. The file name output-file can be any expression. Its value is changed to a string and then used as a file name (see section Actions: Expressions).

    When this type of redirection is used, the output-file is erased before the first output is written to it. Subsequent writes do not erase output-file, but append to it. If output-file does not exist, then it is created.

    For example, here is how one awk program can write a list of BBS names to a file `name-list' and a list of phone numbers to a file `phone-list'. Each output file contains one name or number per line.

    awk '{ print $2 > "phone-list"
           print $1 > "name-list" }' BBS-list

print items >> output-file
    This type of redirection prints the items onto the output file output-file. The difference between this and the single-`>' redirection is that the old contents (if any) of output-file are not erased. Instead, the awk output is appended to the file.

expert1

回复 3# 251995427


    好像和close有关，你close,然后再试试看

yinyuemi

回复 6# expert1


    多谢斑竹指点

1. seq 10 |awk '{print >"s"}{close("s")}'
   
2. 
   
3. cat s
   
4. 10
   
5. 
   
6. seq 10 |awk '{print >>"s"}{close("s")}'
   
7. 
   
8. cat s
   
9. 10
   
10. 1
    
11. 2
    
12. 3
    
13. 4
    
14. 5
    
15. 6
    
16. 7
    
17. 8
    
18. 9
    
19. 10
    

复制代码

cjaizss

awk '{print >>$1}' urfile

raohongfu

二楼的强

luyi1983

回复  251995427
yinyuemi 发表于 2011-06-28 23:33

    学习。。。