cut OPTION... [FILE]...
!subtitle:功能
从文件的行中截取指定的部分。
!subtitle:类型
可执行文件（/usr/bin/cut），属于 coreutils。
!subtitle:参数
OPTION 选项：
-b, --bytes=LIST - 要截取的字节
-c, --characters=LIST - 要截取的字符
-d, --delimiter=DELIM - 使用 DELIM 作为字段分隔符，而不是 TAB
-f, --fields=LIST - 要截取的字段
-n - 防止截断多字节字符（无效，被忽略）
--complement - 对选取的字节、字符、字段进行补全
-s, --only-delimited - 不要打印不含分隔符的行
--output-delimiter=STRING - 打印输出时用 STRING 代替分隔符
-z, --zero-terminated - 以空字符（\0）作为行的结尾，而不是换行符（\n）
--help - 显示当前帮助
--version - 显示版本
FILE - 文件列表；- 表示读取标准输入
$ cat 1.txt
id,name,age,city
1,Alice,23,London
2,Bob,31,Paris
3,Carol,27,Tokyo
$ cut 1.txt -c 1-10 1.txt # 截取 1 至 10 字符
id,name,ag
1,Alice,23
2,Bob,31,P
3,Carol,27
id,name,ag
1,Alice,23
2,Bob,31,P
3,Carol,27
$ cut -d ',' -f 2,3 1.txt # 逗号作为分隔符，截取 2,3 字段
name,age
Alice,23
Bob,31
Carol,27
CUT(1) User Commands CUT(1)
NAME
cut - remove sections from each line of files
SYNOPSIS
cut OPTION... [FILE]...
DESCRIPTION
Print selected parts of lines from each FILE to standard output.
With no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short options
too.
-b, --bytes=LIST
select only these bytes
-c, --characters=LIST
select only these characters
-d, --delimiter=DELIM
use DELIM instead of TAB for field delimiter
-f, --fields=LIST
select only these fields; also print any line that contains no
delimiter character, unless the -s option is specified
-n (ignored)
--complement
complement the set of selected bytes, characters or fields
-s, --only-delimited
do not print lines not containing delimiters
--output-delimiter=STRING
use STRING as the output delimiter the default is to use the in‐
put delimiter
-z, --zero-terminated
line delimiter is NUL, not newline
--help display this help and exit
--version
output version information and exit
Use one, and only one of -b, -c or -f. Each LIST is made up of one
range, or many ranges separated by commas. Selected input is written
in the same order that it is read, and is written exactly once. Each
range is one of:
N N'th byte, character or field, counted from 1
N- from N'th byte, character or field, to end of line
N-M from N'th to M'th (included) byte, character or field
-M from first to M'th (included) byte, character or field
AUTHOR
Written by David M. Ihnat, David MacKenzie, and Jim Meyering.
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/cut>
or available locally via: info '(coreutils) cut invocation'
GNU coreutils 9.4 April 2024 CUT(1)