#Bash 的 fmt 命令

fmt [-WIDTH] [OPTION]... [FILE]...

功能

简单文本格式化。

类型

可执行文件（/usr/bin/fmt），属于 coreutils。

参数

WIDTH - 每行宽度；同 -w 选项，默认为 75
OPTION 选项：
- -c, --crown-margin - 保留前两行的缩进
- -p, --prefix=STRING - 仅格式化以 STRING 开头的行，并将前缀重新附加到格式化的行
- -s, --split-only - 拆分长行，但不补充
- -t, --tagged-paragraph - 第一行的缩进与第二行不同
- -u, --uniform-spacing - 单词之间空一格，句子之后空两格
- -w, --width=WIDTH - 每行宽度；默认为 75
- -g, --goal=WIDTH - 目标宽度（单词提前换行）；默认为行宽的 93%
- --help - 显示帮助
- --version - 显示版本
FILE 文件列表；如果没有这个参数或指定为 -，则读取标准输入

#示例

$ echo 'Primers 编程伙伴 https://xplanc.org/primers/' > 1.txt   # 创建文件
$ cat 1.txt                                                     # 查看文件
Primers 编程伙伴 https://xplanc.org/primers/
$ fmt -w 40 1.txt                                               # 行宽度 40
Primers 编程伙伴
https://xplanc.org/primers/
$ fmt -w 40 -g 10 1.txt                                         # 行宽度 40 目标宽度 10
Primers
编程伙伴
https://xplanc.org/primers/

#推荐阅读

#手册

FMT(1)                           User Commands                          FMT(1)

NAME
       fmt - simple optimal text formatter

SYNOPSIS
       fmt [-WIDTH] [OPTION]... [FILE]...

DESCRIPTION
       Reformat  each  paragraph  in  the FILE(s), writing to standard output.
       The option -WIDTH is an abbreviated form of --width=DIGITS.

       With no FILE, or when FILE is -, read standard input.

       Mandatory arguments to long options are  mandatory  for  short  options
       too.

       -c, --crown-margin
              preserve indentation of first two lines

       -p, --prefix=STRING
              reformat  only lines beginning with STRING, reattaching the pre‐
              fix to reformatted lines

       -s, --split-only
              split long lines, but do not refill

       -t, --tagged-paragraph
              indentation of first line different from second

       -u, --uniform-spacing
              one space between words, two after sentences

       -w, --width=WIDTH
              maximum line width (default of 75 columns)

       -g, --goal=WIDTH
              goal width (default of 93% of width)

       --help display this help and exit

       --version
              output version information and exit

AUTHOR
       Written by Ross Paterson.

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/fmt>
       or available locally via: info '(coreutils) fmt invocation'

GNU coreutils 9.4                 April 2024                            FMT(1)

#Bash 的 fmt 命令

#示例

#推荐阅读

#手册

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