1、测试数据

root@PC1:/home/test2# ls
test.txt
root@PC1:/home/test2# cat test.txt
a 3 5 d
s g e z
root@PC1:/home/test2# cat -A test.txt
a 3 5 d$
s g e z$

 

2、wc -c

root@PC1:/home/test2# ls
test.txt
root@PC1:/home/test2# cat test.txt
a 3 5 d
s g e z
root@PC1:/home/test2# cat -A test.txt
a 3 5 d$
s g e z$
root@PC1:/home/test2# wc -c test.txt  ## 每一行8个字符，包含了空格和末尾的换行符
16 test.txt