为什么 wc 命令比预期的多一个字符? [英] Why does the wc command count one more character than expected?

问题描述

以下是我的文件中存储的内容

The following is the content stored in my file

This is my Input

因此，使用 wc -c 命令我们可以获得文件中存储的字符数.

So, using wc -c command we can get the number of characters stored in the file.

我在 Ubuntu 中使用 Vim 编辑的上述文件的预期输出是 16.但是，wc -c 命令返回 17.

My expected output for above file that edited by using Vim in Ubuntu is 16. But, wc -c command returns 17.

为什么输出是这样的?行尾甚至没有回车.那么，第 17 个字符是什么?

Why is the output like this? There isn't even a carriage return at end of line. So, what is the 17th character?

推荐答案

当然你已经进入了.也许你看不到.考虑以下两个示例:

Of course you had enter. Maybe you can't see it. Consider these two examples:

echo -n "This is my Input" | wc -c
16

因为-n是为了避免回车，但是

Because -n is for avoiding enter, but

echo "This is my Input" | wc -c
17

看看这个例子，看看新的一行:

Look at this example too see the new line:

echo "This is my Input" | od -c

od 转储八进制和其他格式的文件.-c 选择 ASCII 字符或反斜杠转义.

od dumps files in octal and other formats. -c selects ASCII characters or backslash escapes.

这里是od的文件和用法示例:

And here is an example for file and usage of od:

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