wc命令用于统计文本文件的字节数、字数、行数。
命令格式：
wc [OPTION]… [FILE]…
wc [OPTION]… –files0-from=F
选项：
-c：统计字节数
-m：统计字符数
-l：统计行数
-w：统计单词数
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 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例1，查看文件行数
study@DESKTOP:/var/log$ wc dpkg.log
576 3446 41244 dpkg.log