2.3.16、wc：统计文本

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• wc 命令：对文本进行统计，包括单词个数、行数、字节数

• • wc [选项] [文件名]

• • • 选项：

• • • • -c：统计字节数
      • -w：统计单词数
      • -l：统计行数

[test1@VM-4-13-centos ~]$ wc -l <test.sh
:<<!
5
!

1、常用命令

（1）统计文件中的单词数

• 英文文件（统计 word 数）

• • wc -w file_name

• 中文文件（统计字符数；统计时换行符也会被统计进去）

• • wc -m file_name

（2）统计文件行数

• wc -l file_name

2、参数解析

Usage: wc [OPTION]... [FILE]...
  or:  wc [OPTION]... --files0-from=F
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
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, always 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
      --help     display this help and exit
      --version  output version information and exit

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Full documentation at: <https://www.gnu.org/software/coreutils/wc>
or available locally via: info '(coreutils) wc invocation'

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