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Comment créer un fichier vide en ligne de commande sous Windows ?

ayi

Comment créer un fichier vide en ligne de commande sous Windows ?
<hr>
Source : <a href="https://stackoverflow.com/users/5423827/luc-vu" rel="noopener nofollow ugc">Stack Overflow [windows]</a>

ayi_2

Without redirection, <a href="https://stackoverflow.com/users/5423827/luc-vu">Luc Vu</a> or <a href="https://stackoverflow.com/users/2474955/erik-konstantopoulos">Erik Konstantopoulos</a> <a href="https://stackoverflow.com/a/34460123/6309">point</a> <a href="https://stackoverflow.com/a/32296375/6309">out</a> to:
<pre><code class="lang-auto">copy NUL EMptyFile.txt
copy /b NUL EmptyFile.txt

</code></pre>
“<a href="https://stackoverflow.com/q/210201/6309">How to create empty text file from a batch file?</a>” (2008) also points to:
<pre><code class="lang-auto">type NUL > EmptyFile.txt

also

echo. 2>EmptyFile.txt
copy nul file.txt > nul # also in qid's answer below
REM. > empty.file
fsutil file createnew file.cmd 0 # to create a file on a mapped drive

</code></pre>
<a href="https://stackoverflow.com/users/3040932/nomad">Nomad</a> mentions <a href="https://stackoverflow.com/a/20237561/6309">an original one</a>:
<pre><code class="lang-auto">C:\Users\VonC\prog\tests>aaaa > empty_file
'aaaa' is not recognized as an internal or external command, operable program or batch file.

C:\Users\VonC\prog\tests>dir

Folder C:\Users\VonC\prog\tests

27/11/2013 10:40 <REP> .
27/11/2013 10:40 <REP> ..
27/11/2013 10:40 0 empty_file

</code></pre>
In the same spirit, <a href="https://stackoverflow.com/users/840405/samuel">Samuel</a> suggests <a href="https://stackoverflow.com/questions/1702762/how-to-create-an-empty-file-at-the-command-line-in-windows/43677896#comment74402568_1702790">in the comments</a>:
the shortest one I use is basically the one by Nomad:
<pre><code class="lang-auto">.>out.txt

</code></pre>
It does give an error:
<pre><code class="lang-auto">'.' is not recognized as an internal or external command

</code></pre>
But this error is on stderr. And <code>></code> only redirects stdout, where nothing have been produced.
Hence the creation of an empty file.
The error message can be disregarded here. Or, as in <a href="https://stackoverflow.com/users/5999372/rain">Rain</a>’s <a href="https://stackoverflow.com/a/64419773/6309">answer</a>, redirected to <code>NUL</code>:
<pre><code class="lang-auto">.>out.txt 2>NUL

</code></pre>
(Original answer, November 2009)
<pre><code class="lang-auto">echo.>filename

</code></pre>
(<code>echo ""</code> would actually put “” in the file! And <code>echo</code> without the ’
(Réponse tronquée)