bash: wc
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WC(1) User Commands
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. With no FILE, or when FILE is -, read standard input. A word is a non-zero-length sequence of characters delimited by white space. 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 length of the longest line
-w, --words
print the word counts
--help display this help and exit
--version
output version information and exit
For example:
BJS\lisa.liu@lisaliuubtpc:~$ cat /etc/manpath.config |head|wc -c
433
BJS\lisa.liu@lisaliuubtpc:~$ cat /etc/manpath.config |head|wc -m
433
-c : 统计文件中的字节数
-m: 统计文件内容中的字符数,若文件内容都是单字节字符,则等同于-c选项
所以A-Z a-z 0-9大多数字符都是 (1 byte in size),因此-c和-m参数使用的结果会一样!
BJS\lisa.liu@lisaliuubtpc:~$ cat 2.txt
你好
BJS\lisa.liu@lisaliuubtpc:~$ cat 2.txt|wc -c
7 (每个中文占3个字节+1个字节结束符)
BJS\lisa.liu@lisaliuubtpc:~$ cat 2.txt|wc -m
3(每个中文为1个字符+1个结束符)
BJS\lisa.liu@lisaliuubtpc:~$ cat 2.txt|wc -l
1
BJS\lisa.liu@lisaliuubtpc:~$ cat 3.txt
hello
BJS\lisa.liu@lisaliuubtpc:~$ cat 3.txt|wc -c
6
BJS\lisa.liu@lisaliuubtpc:~$ cat 3.txt|wc -m
6
BJS\lisa.liu@lisaliuubtpc:~$ cat 3.txt|wc -l
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. With no FILE, or when FILE is -, read standard input. A word is a non-zero-length sequence of characters delimited by white space. 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 length of the longest line
-w, --words
print the word counts
--help display this help and exit
--version
output version information and exit
For example:
BJS\lisa.liu@lisaliuubtpc:~$ cat /etc/manpath.config |head|wc -c
433
BJS\lisa.liu@lisaliuubtpc:~$ cat /etc/manpath.config |head|wc -m
433
-c : 统计文件中的字节数
-m: 统计文件内容中的字符数,若文件内容都是单字节字符,则等同于-c选项
所以A-Z a-z 0-9大多数字符都是 (1 byte in size),因此-c和-m参数使用的结果会一样!
BJS\lisa.liu@lisaliuubtpc:~$ cat 2.txt
你好
BJS\lisa.liu@lisaliuubtpc:~$ cat 2.txt|wc -c
7 (每个中文占3个字节+1个字节结束符)
BJS\lisa.liu@lisaliuubtpc:~$ cat 2.txt|wc -m
3(每个中文为1个字符+1个结束符)
BJS\lisa.liu@lisaliuubtpc:~$ cat 2.txt|wc -l
1
BJS\lisa.liu@lisaliuubtpc:~$ cat 3.txt
hello
BJS\lisa.liu@lisaliuubtpc:~$ cat 3.txt|wc -c
6
BJS\lisa.liu@lisaliuubtpc:~$ cat 3.txt|wc -m
6
BJS\lisa.liu@lisaliuubtpc:~$ cat 3.txt|wc -l
1
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