linux大文件分割 split命令

不念不忘少年蓝@ 2022-03-25 06:20 515阅读 0赞

linux大文件分割 split命令

inux split 命令

功能说明：切割文件。

语　　法：split \[--help\]\[--version\]\[-<行数>\]\[-b <字节>\]\[-C <字节>\]\[-l <行数>\]\[要切割的文件\]\[输出文件名\]

补充说明：split可将文件切成较小的文件，预设每1000行会切成一个小文件。

参　　数：

-<行数>或-l<行数> 　指定每多少行就要切成一个小文件。

-b<字节> 　指定每多少字就要切成一个小文件。支持单位:m,k

-C<字节> 　与-b参数类似，但切割时尽量维持每行的完整性。

--help 　显示帮助。

--version 　显示版本信息。

\[输出文件名\] 　设置切割后文件的前置文件名，split会自动在前置文件名后再加上编号。

使用例子：

**split -b 100m 1111.log (按照字节分隔)**

**split -l 1000000 1111.log(按照行数分隔)**

> bogon:test\_split a6$ info split
> 
> SPLIT(1)                  BSD General Commands Manual                 SPLIT(1)
> 
> NAME  
>      split -- split a file into pieces
> 
> SYNOPSIS  
>      split \[-a suffix\_length\] \[-b byte\_count\[k|m\]\] \[-l line\_count\]  
>            \[-p pattern\] \[file \[name\]\]
> 
> DESCRIPTION  
>      The split utility reads the given file and breaks it up into files of  
>      1000 lines each.  If file is a single dash (\`-') or absent, split reads  
>      from the standard input.
> 
>      The options are as follows:
> 
>      -a suffix\_length  
>              Use suffix\_length letters to form the suffix of the file name.
> 
>      -b byte\_count\[k|m\]  
>              Create smaller files byte\_count bytes in length.  If \`\`k'' is  
>              appended to the number, the file is split into byte\_count kilo-  
>              byte pieces.  If \`\`m'' is appended to the number, the file is  
>              split into byte\_count megabyte pieces.
> 
>      -l line\_count  
>              Create smaller files n lines in length.
> 
>      -p pattern  
>              The file is split whenever an input line matches pattern, which  
>              is interpreted as an extended regular expression.  The matching  
>              line will be the first line of the next output file.  This option  
>              is incompatible with the -b and -l options.
> 
>      If additional arguments are specified, the first is used as the name of  
>      the input file which is to be split.  If a second additional argument is  
>      specified, it is used as a prefix for the names of the files into which  
>      the file is split.  In this case, each file into which the file is split  
>      is named by the prefix followed by a lexically ordered suffix using  
>      suffix\_length characters in the range \`\`a-z''.  If -a is not specified,  
>      two letters are used as the suffix.

参考：[https://www.cnblogs.com/wangkongming/p/5163909.html][https_www.cnblogs.com_wangkongming_p_5163909.html]

[https_www.cnblogs.com_wangkongming_p_5163909.html]: https://www.cnblogs.com/wangkongming/p/5163909.html