linux - Why does the `echo -e "\n"` command output two blank lines when it has only one newline character?

Question

Just like the title.

<code>root@localhost:~# echo -e "\n"


root@localhost:~#
</code>

Answer 1

By default echo will output a newline character. So adding the specified "n", a total of two will be output.

-n Don’t automatically wrap the line at the end

So you can pass echo -n to not output the default newline.

Answer 2

<code>echo</code>

The principle is explained by the two classmates above. If the questioner needs to output a blank line, this is fine

Answer 3

Because the echo command itself appends a newline character to the output string by default, you can prevent this default behavior by adding an option -n:

<code>echo -ne "\n"</code>