wc 命令使用說明

xuyaowen發表於2018-07-22

wc 命令 使用說明

wc 命令還是很是簡單的，通過 man 命令，可以見到可以選擇的選項：

 

wc option file 

並且 wc 命令支援 管道操作

其中較為常用的命令選項

-c 字元的個數

-l 檔案的行數

-w 單詞的個數

 

小例子：

➜  ~ wc -l /etc/passwd
47 /etc/passwd
➜  ~ wc -c /etc/passwd
2549 /etc/passwd
➜  ~ wc -w /etc/passwd
104 /etc/passwd
➜  ~

Man 手冊，具體內容很簡短，有時間大家還是多閱讀英文手冊。

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 char‐
       acters 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

 

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