#Bash 的 csplit 命令
csplit [OPTION]... FILE PATTERN...
功能
将文件拆分为多个部分。
拆分后依次输出到文件 xx00，xx01， ...，并在标准输出上依次打印输出文件的字节数。
类型
可执行文件（/usr/bin/csplit），属于 coreutils。
参数
OPTION选项：-b,--suffix-format=FORMAT- 输出文件名的后缀格式-f,--prefix=PREFIX- 输出文件名的前缀-k,--keep-files- 产生错误时不要删除输出文件--suppress-matched- 删除匹配的行-n,--digits=DIGITS- 输出文件名的后缀数字位数-s,--quiet,--silent- 不打印输出-z,--elide-empty-files- 不输出空文件--help- 显示帮助--version- 显示版本
FILE- 要拆分的文件；-表示读取标准输入PATTERN- 模式列表，每个模式由以下结构组成：整数- 复制到INTEGER行（不含该行）/正则表达式/[行偏移量]- 复制到匹配的行（不含该行）；行偏移量可以省略%正则表达式%[行偏移量]- 跳过到匹配的行（不含该行）；行偏移量可以省略{整数}- 重复前面的模式INTEGER次{*}- 重复前面的模式经可能多次
#示例
行号
$ man csplit | cat -n | csplit - 30 60
1012
1953
$ cat xx00 # xx00 从 0 到 29 行
...
25 do not remove output files on errors
26
27 --suppress-matched
28 suppress the lines matching PATTERN
29
$ cat xx01 # xx01 从 30 到 59 行
30 -n, --digits=DIGITS
31 use specified number of digits instead of 2
32
33 -s, --quiet, --silent
...
55 repeat the previous pattern specified number of times
56
57 {*} repeat the previous pattern as many times as possible
58
59 A line OFFSET is an integer optionally preceded by '+' or '-'
$ cat xx02 # xx02 从 60 行 到结尾
60
61 AUTHOR
62 Written by Stuart Kemp and David MacKenzie.
63
64 REPORTING BUGS
...
正则表达式
$ man csplit | csplit - '/^[A-Z]+$/' '{*}' # 复制到匹配 /^[A-Z]+$/ 的行（不含该行），重复尽可能多次
80
77
52
1451
228
531
$ cat xx0 # 按每个小节拆分
CSPLIT(1) User Commands CSPLIT(1)
$ cat xx01
NAME
csplit - split a file into sections determined by context lines
$ cat xx02
SYNOPSIS
csplit [OPTION]... FILE PATTERN...
$ cat xx03
DESCRIPTION
Output pieces of FILE separated by PATTERN(s) to files 'xx00', 'xx01',
..., and output byte counts of each piece to standard output.
...
$ cat xx04
AUTHOR
Written by Stuart Kemp and David MacKenzie.
REPORTING BUGS
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>
#推荐阅读
#手册
CSPLIT(1) User Commands CSPLIT(1)
NAME
csplit - split a file into sections determined by context lines
SYNOPSIS
csplit [OPTION]... FILE PATTERN...
DESCRIPTION
Output pieces of FILE separated by PATTERN(s) to files 'xx00', 'xx01',
..., and output byte counts of each piece to standard output.
Read standard input if FILE is -
Mandatory arguments to long options are mandatory for short options
too.
-b, --suffix-format=FORMAT
use sprintf FORMAT instead of %02d
-f, --prefix=PREFIX
use PREFIX instead of 'xx'
-k, --keep-files
do not remove output files on errors
--suppress-matched
suppress the lines matching PATTERN
-n, --digits=DIGITS
use specified number of digits instead of 2
-s, --quiet, --silent
do not print counts of output file sizes
-z, --elide-empty-files
suppress empty output files
--help display this help and exit
--version
output version information and exit
Each PATTERN may be:
INTEGER
copy up to but not including specified line number
/REGEXP/[OFFSET]
copy up to but not including a matching line
%REGEXP%[OFFSET]
skip to, but not including a matching line
{INTEGER}
repeat the previous pattern specified number of times
{*} repeat the previous pattern as many times as possible
A line OFFSET is an integer optionally preceded by '+' or '-'
AUTHOR
Written by Stuart Kemp and David MacKenzie.
REPORTING BUGS
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>
COPYRIGHT
Copyright © 2023 Free Software Foundation, Inc. License GPLv3+: GNU
GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
Full documentation <https://www.gnu.org/software/coreutils/csplit>
or available locally via: info '(coreutils) csplit invocation'
GNU coreutils 9.4 April 2024 CSPLIT(1)