作者:任乔彦 | 来源:互联网 | 2017-06-27 07:06
文章标题:Linux文件分割与合并:split&cat。Linux是中国IT实验室的一个技术频道。包含桌面应用,Linux系统管理,内核研究,嵌入式系统和开源等一些基本分类
Linux下文件分割可以通过split命令来实现,可以指定按行数分割和安大小分割两种模式。Linux下文件合并可以通过cat命令来实现,非常简单。
在Linux下用split进行文件分割:
模式一:指定分割后文件行数
对与txt文本文件,可以通过指定分割后文件的行数来进行文件分割。
命令:split -l 300 large_file.txt new_file_prefix
模式二:指定分割后文件大小
对于可执行文件等二进制文件,则不能通过文件行数来进行文件分割,此时我们可以指定分割大小来分隔文件。
命令:split -b 10m large_file.bin new_file_prefix
对二进制文件我们同样也可以按文件大小来分隔。
在Linux下用cat进行文件合并:
命令:cat small_files* > large_file
Linx文件分割命令split manpage:
NAME
split - split a file into pieces
SYNOPSIS
split [OPTION] [INPUT [PREFIX]]
DESCRIPTION
Output fixed-size pieces of INPUT to PREFIXaa, PREFIXab, ...; default size
is 1000 lines, and default PREFIX is 'x'. With no INPUT, or when INPUT is
-, read standard input.
Mandatory arguments to long options are mandatory for short options too.
-a, --suffix-length=N
use suffixes of length N (default 2)
-b, --bytes=SIZE
put SIZE bytes per output file
-C, --line-bytes=SIZE
put at most SIZE bytes of lines per output file
-d, --numeric-suffixes
use numeric suffixes instead of alphabetic
-l, --lines=NUMBER
put NUMBER lines per output file
--verbose
print a diagnostic to standard error just before each output file
is opened
--help display this help and exit
--version
output version information and exit
SIZE may have a multiplier suffix: b for 512, k for 1K, m for 1 Meg.
AUTHOR
Written by Torbjorn Granlund and Richard M. Stallman.
REPORTING BUGS
Report bugs to .
COPYRIGHT
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the terms
of the GNU General Public License .
There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for split is maintained as a Texinfo manual. If
the info and split programs are properly installed at your site, the com-
mand
info split
should give you access to the complete manual.