wc [OPTION]... [FILE]...
!subtitle:功能
计算文件的行数、单词数和字节数。
!subtitle:类型
可执行文件（/usr/bin/wc），属于 coreutils。
!subtitle:参数
OPTION 选项：
-c, --bytes - 打印字节数
-m, --chars - 打印字符数
-l, --lines - 打印行数
--files0-from=F - 从文件 F 中读取文件列表作为输入，，每个文件名以空字符（\0）结尾；如果 F 是 - 则从标准输入读取文件列表
-L, --max-line-length - 打印的最大宽度
-w, --words - 打印单词数
--total=WHEN - 何时打印总数行：
auto - 自动
always - 总是打印总数行
only - 仅打印总数行，不打印各文件行
never - 从不打印总数行
--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
$ cat 1.txt
Primers 编程伙伴
https://xplanc.org/primers/
$ wc 1.txt
2 3 49 1.txt
$ wc 1.txt 2.txt --total=always # 打印总数行
2 3 49 1.txt
3 3 6 2.txt
5 6 55 total
$ wc 1.txt 2.txt --total=only # 仅打印总数行
5 6 55 total
WC(1) User Commands WC(1)
NAME
wc - print newline, word, and byte counts for each file
SYNOPSIS
wc [OPTION]... [FILE]...
wc [OPTION]... --files0-from=F
DESCRIPTION
Print newline, word, and byte counts for each FILE, and a total line if
more than one FILE is specified. A word is a non-zero-length sequence
of printable characters delimited by white space.
With no FILE, or when FILE is -, read standard input.
The options below may be used to select which counts are printed, al‐
ways in the following order: newline, word, character, byte, maximum
line length.
-c, --bytes
print the byte counts
-m, --chars
print the character counts
-l, --lines
print the newline counts
--files0-from=F
read input from the files specified by NUL-terminated names in
file F; If F is - then read names from standard input
-L, --max-line-length
print the maximum display width
-w, --words
print the word counts
--total=WHEN
when to print a line with total counts; WHEN can be: auto, al‐
ways, only, never
--help display this help and exit
--version
output version information and exit
AUTHOR
Written by Paul Rubin 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/wc>
or available locally via: info '(coreutils) wc invocation'
GNU coreutils 9.4 April 2024 WC(1)