sed或awk对于一行超过２０４８字节的行操作都不启作用！

寂寞烈火

原帖由 yonghuzcy 于 2006-8-21 16:02 发表
烈火兄，怎么fmt,告之，谢谢：）

man fmt

stephen412

看来确实是和系统有关系阿！

4Aiur

原帖由 Suchangyu 于 2006-8-22 15:32 发表

请 4Aiur 解释一下你给的东西吧！

我是用的机器做的测试与scode做对比

原帖由 scode 于 2006-8-21 15:37 发表
做了个测试，apache日志文件1.6G，一共1600多万行。
我用awk '{print $1}' access_log 发现出现错误
[code]awk: input record `61.132.138.150 - - [...' too long
input record number 710342, file access_l ...

hiei1321

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                         Commands Reference, Volume 2
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fmt Command

Purpose

Formats mail messages prior to sending.

Syntax

/usr/bin/fmt [ -Width ] [ File ... ]

Description

The fmt command starts a text formatter that reads the concatenation of input
Files (or standard input if no Files are specified), then produces on standard
output a version of the input with the line lengths set to the value of -Width.
If no value is specified with the -Width flag, the default value of 72
characters is used. The spacing at the beginning of the input lines is preserved
in the output, as are blank lines and spacing between words.

The fmt command is generally used to format mail messages to improve their
appearance before they are sent. However, the fmt command may also be useful for
simple formatting tasks. For example, within visual mode of a text editing
program such as the vi editor, the command !}fmt formats a paragraph so that all
lines are set to the value specified with the -Width flag. If no value is
specified with the -Width flag, the default value of 72 characters is used.
Standard text editing programs are more appropriate than fmt for complex
formatting operations.

    Note: Do not use the fmt command if the message contains embedded messages
    or preformatted information from other files. This command formats the
    heading information in embedded messages and may change the format of
    preformatted information.

Flags

File Specifies the name of the file to be formatted.

-Width Specifies the line length. The default value for Width is 72 characters.

Examples

  1. To format a message you have created with the mail editor, enter:
     ~| fmt

     The ~| is entered at the left margin of the message. After you issue the ~|
     fmt command, the message is formatted. The word (continue) is displayed to
     indicate that you can enter more information or send the message.
  2. To format a file and display the output on your screen, enter:
     fmt file1

     In this example, the file file1 is formatted and displayed on your screen.

Files

/usr/bin/fmt Contains the fmt command.

Related Information

The mail command, nroff command, vi command.

Editor Overview in AIX Version 4.3 INed Editor User's Guide.

Mail Overview in AIX Version 4.3 System User's Guide: Communications and
Networks.
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Suchangyu

原帖由 4Aiur 于 2006-8-22 16:07 发表


我是用的机器做的测试与scode做对比

我不懂 awk，tail 和 test ，所以才会问这样的问题。

刚才查了一下 man ，知道“ tail -1 ip ”是打印 ip的最后一行，28365714是你测试得到的行数。

可是，下段命令没有看懂：

1. 
   
2. test 5.2G
   

复制代码

再麻烦指点我一下，谢谢！

4Aiur

原帖由 Suchangyu 于 2006-8-25 16:13 发表


我不懂 awk，tail 和 test ，所以才会问这样的问题。

刚才查了一下 man ，知道“ tail -1 ip ”是打印 ip的最后一行，28365714是你测试得到的行数。

可是，下段命令没有看懂：
[code]
test 5.2G
[/ ...

我测试文件(test)的大小是5.2G的