how to append an empty line in text file using command line ?

Question

how to append an empty line in text file using command line

 echo hi >a.txt
    echo >>a.txt
    echo arun >>a.txt 

here the out put comes as

hi 
echo on 
arun 

so how could i append a empty line ..i want it to be like .

hi 

arun

when i added this line on code @echo off it said echo off .how can it be done

Answer 1

In the Windows command prompt, try:

echo.>> a.txt

Note that there is no space between echo and .; if there is one, it will output a dot. There is also no space between the . and the >>; anything in between would be output to the file, even whitespace characters.

See the Microsoft documentation for echo.

If this were in bash, your first try would have been correct:

echo >> a.txt

But in Windows, the unqualified echo command tests whether there is a command prompt or not (echo off turns the prompt off and echo on turns it back on).

Answer 2

At Windows Prompt:

echo. >> a.txt

At BASH Prompt:

echo >> a.txt

(Echo by default sends a trailing newline)

-n do not output the trailing newline

Answer 3

whats wrong with simple

echo hi\n >> a.txt

?