Create file from command line

We can create files from command line in two ways. The first way is to use fsutil command and the other way is to use echo command. If you want to write any specific data in the file then use echo command. If you are not bothered about the data in the file but just want to create a file of some specific size then you can use fsutil command.

To create file using echo

To create file using fsutil

Limitations

Fsutil can be used only by administrators. For non-admin users it throws up below error.

Thank you for the quick and dirty method since windows seems to lack the “touch” command.

How can we use these commands to ‘touch’ a file. Could anyone provide the exact command that can work as linux ‘touch’ for any type of file?

Windows does not lack “touch”. It is echo. As the post describes? type: echo “” Blah.cpp

dude, this isnt working on our school’s computers, can you tell another method that works on windows 8 computers please?

lmao it works at school PC

Make sure that you are typing in the code the right way. It happened to me when I typed in “echo This is a sample text file sample.txt”.

If you want to create a file with NO text in it do this:
at the CLI type “Echo.”: Your output should look like this:
C:\Temp>echo.

To write to a file:
C:\Temp> Echo. >test.txt

This will create a file with single space in the file.

Creating and Using a Temporary File

Applications can obtain unique file and path names for temporary files by using the GetTempFileName and GetTempPath functions. The GetTempFileName function generates a unique file name, and the GetTempPath function retrieves the path to a directory where temporary files should be created.

The following procedure describes how an application creates a temporary file for data manipulation purposes.

To create and use a temporary file

1. The application opens the user-provided source text file by using CreateFile.
2. The application retrieves a temporary file path and file name by using the GetTempPath and GetTempFileName functions, and then uses CreateFile to create the temporary file.
3. The application reads blocks of text data into a buffer, converts the buffer contents to uppercase using the CharUpperBuffA function, and writes the converted buffer to the temporary file.
4. When all of the source file is written to the temporary file, the application closes both files, and renames the temporary file to «allcaps.txt» by using the MoveFileEx function.

Each of the previous steps is checked for success before moving to the next step, and a failure description is displayed if an error occurs. The application will terminate immediately after displaying the error message.

Note that text file manipulation was chosen for ease of demonstration only and can be replaced with any desired data manipulation procedure required. The data file can be of any data type, not only text.

The GetTempPath function retrieves a fully qualified path string from an environment variable but does not check in advance for the existence of the path or adequate access rights to that path, which is the responsibility of the application developer. For more information, see GetTempPath. In the following example, an error is regarded as a terminal condition and the application exits after sending a descriptive message to standard output. However, many other options exist, such as prompting the user for a temporary directory or simply attempting to use the current directory.

The GetTempFileName function does not require that the GetTempPath function be used.

The following C++ example shows how to create a temporary file for data manipulation purposes.

How to create a unique temporary file path in command prompt without external tools? [duplicate]

I am trying to create the path to a temporary file to be used in a batch file.

There are the environment variables %TEMP% and %TMP% to get the temporary directory for the current user. But how to build a file name that does surely not yet exist?

Of course I can use the built-in variable %RANDOM% and create something like bat

%RANDOM%.tmp , but this method does not ensure that the file is currently inexistent (or that it will be created coincidentally by another application, before I first create it on disk and write to it) — although this all is very unlikely.

I know I could just reduce the probability of such collisions by appending also %DATE% / %TIME% , or by just adding multiple %RANDOM% instances, but this is not what I want.

Note: According to this post, there is a method in .NET ( Path.GetTempFileName() ) which does exactly what I am asking for (besides the wrong programming language obviously).

3 Answers 3

Try next code snippet:

or create procedures

:uniqGet : create a file of a fix filename template ( bat

%RANDOM%.tmp in your case);
:uniqGetByMask : create a file of a variable filename template. Note quadrupled percent signs of %random% reference in a procedure call: prefix%%%%random%%%%suffix.ext . Also note advanced usage: CALL ing internal commands in call set «_uniqueFileName=%

2″ inside the procedure.

The code could be as follows:

Output:

I suggest you one of two methods. The «technical approach» is to use JScript’s FileSystemObject.GetTempName method. JScript is a programming language that comes pre-installed in all Windows versions from XP on, and its use in Batch via a «Batch-JScript» hybrid script is very simple:

However, the simplest approach is to store a number in a data file and every time that you want a new name, get the number, increment it and store it back in the same file. This will work for «just» 2147483647 times!

Firstly, using a separate folder will significantly reduce the chances of other programs intruding. So lets store the temp file in a private folder that’s really long and specific to prevent any name competition.

When generating the name, you could always use %random% and try generating a name which does not exist, however the more times this operation is use, the more ineffective it becomes. If you plan to use this process 10’s of thousands of times as the random function is limited to 32000 (approximately) your program will spend forever generating random attempts.

The next best approach is to start a counter at one and increase it till you have an unused name. That way you can guarantee your program will eventually find a name in a reasonable amount of time, however again your files will pile up (which is never a good experience)

What some people do (and I would recommend for your situation) is combine these to processes to effectively cut the fat in selecting a name, while using a reliable method (the best of both worlds):

How To Create Files – From The Command Line (The Easy Way!) – Windows, CMD

Jump Right In:

Navigate to where you want to create your file.

Create A File Using CMD (Empty, Text, Batch).

Creating files with the current date.

Creating a dummy file with a specific size.

Create Files From Different Directories.

Create multiple files at once — Using CMD.

What We’ll Learn:

Welcome!
This guide is all about creating new files from the windows command line.

• We’ll start by learning, how to navigate to the location in which we want to create our file or folder from the command prompt.
• How to use the Echo command along with a redirector to create all sorts of files.
• How to embed the current date into the name of your new file.
• How to create dummy files with a specific size using FSutil.
• And finally, we’ll learn how to use a for loop to create multiple files at once with a single command.

Lets get started!

Navigate to where you want to create your file:

Before we begin learning how to create files we must first learn how to change the location of our command line into to the location in which we want to create our new file.

For this example, let’s assume that we want to create our file in our desktop directory.

1) Open a command prompt without administrator privileges

By default, the command prompt is located at a folder within your users directory that’s named after your computers username (C:\Users\MyPC)

2) Use the “Dir” command to view every file and folder in the current directory.

The name of every file and folder as well some information about each of them will immediately appear.

3) Navigate to the directory of your choice using the “CD” command.

“CD” stands for “Change Directory”. Remember to surround the name of the directory you want to navigate into within quotes.

Your current working directory will immediately change.

And that’s it! You should now have navigated into the directory of your choice.

In case you made a mistake you can navigate to the previous directory by typing Cd followed by two dots.

The double dots represent the parent directory.

Now that we are located in the correct directory lets create our file.

Create A File Using CMD (Empty, Text, Batch).

Lets start with learning how to create files from our command line. To do so we will need to use the “Echo” command along with a redirector.

What exactly is echo and a redirector I hear you ask?

This might start to sound complicated, but don’t worry its actually pretty simple.

• Echo is primarily used to print variables or strings to the command line, similar to “print” or “Console.WriteLine” in other programming languages.
• Redirectors are special symbols that can be used complete many functions such as combine two commands or redirect the output of one command into input for another.

Do you see where I am going with this?

We can use the echo command to print a string and redirect its output into a new file by using a redirector, specifically the greater than redirector (>).

Lets see what that would look like:

Text Files:

Lets start by creating a new text file.

To do so all we have to do is type the echo command followed by the text we want our new file to have, the grater than redirector, and the name of your new file within quotes along with the .txt extension.

You should see a new file in your current directory. Pretty simple right?

To view the contents of a file we just created directly from the command line we can use the “Type” command. Simply enter type followed by the name of the file we just created.

The contents of the file will immediately be shown in the command prompt.

Apart from creating a new file we can add or append text to an existing text file. To do so we need to use the greater than symbol twice. Here is what that would look like:

Our file will now contain the following text:

Empty Text Files

In many cases you might want to crate a completely empty text file. The syntax for this command is very similar to our previous command however this time we need to add a dot directly after the echo command.

An empty file will immediately appear in your current directory.

In case you are wondering, the dot tells the echo command to not output anything.

Batch Files

While creating text files is nice, in may case you will want to create batch files. Doing so is very simple, all we have to do is replace the extension of the name of our new file from .txt to .bat.

Here is what that would look like:

And a new batch file will immediately be created in your current directory.

Literally Any type of File:

In a similar way by using the extension of our choice we can create literally any type of file.

• .docx Creates word documents.
• .py Creates python scripts.
• .sql Creates SQL databases.
• And so on…

Creating files with the current date — Using CMD:

You can embed the current date right into the name of the file you are creating by taking advantage of the %Date% automatic variable. Here is what our command would look like:

This command will create a text file with the current date as its name in our current directory.

In my case the file will be named:

You might be wondering what /=- does.

By default, the date in the %Date% variable is stored in this format:

However, to use this as the name of a file we need to replace the backward slashes with any other symbol, so that the command line doesn’t misinterpret our date as a directory.

That is exactly what /=- does, you can replace the dash with any symbol of your choice.

Creating a dummy file with a specific size — Using CMD:

Using the windows command prompt you can create empty, dummy files with a specific size of your choice.

To do so we need to use the FSutil command instead of echo, which is what we have been using thus far.

FSutil stands for file system utility and as the name suggests it can be used to perform various operations on our file system.

But you don’t care about any of that, you just want to create a file.

To do so all you have to do is use the following syntax:

Confused? Lets break it down:

• The File parameter instructs the FSutil command to create a file. Duh.
• CreateNew Instruct it to create a new item.
• Them we have the name of our new file, in this case: Dummy File.
• And finally, the size we want our file to have in bytes.

In this case a 10 MB file will be created.

Adjust the number of bytes to create a file with the size you want.

In case you want to convert gigabytes to bytes, use this online converter.

Create Files From Different Directories — From CMD:

In all the above examples our new files will be created in the current directory.

In case you want to create your new file in a directory other than your current one, you need to enter your target directory just before the name of your new file.

So here is what our echo command would look like:

This command will create an empty file in our documents directory.

To make it work for you replace with your computers username.

And here is what our FSutil command would look like:

This command will create a dummy file with a 10 MB size in our desktop directory.

Once again replace with your computers username.

Create multiple files at once — Using CMD:

In all the above examples we created only a single file. The beauty of the command line however is that you can complete complex, time consuming tasks in an instance, such as creating multiple files at once.

To do so, we need to use a for loop. For loops repeat an instruction a certain number of times.

Lets take a look at all the ways we can use a for loop to create multiple files:

Numbered Files (File1, File2, File3):

Lets start with creating numbered files or, files for which only a number changes between their names.

Without further a do, here is what our command would look like:

This command will create ten empty files in our current directory with the following names: File 1.txt, File 2.txt, File 3.txt, and so on…

This command might also look a little complicated, so let’s break it down:

• The /L parameter instructs the for command to iterate through the numbers in our parentheses, instead of using them directly as the names of our files.
• Our A parameter specifies a single letter replaceable parameter. You can replace A with any letter of your choice. This is similar to a variable, in the sense that its value changes.
• After that we have our condition, the first number specifies the starting number, the second number is the step, and the third number is the ending number.
• And finally, in parenthesis we have the command that will be executed every time the loop is executed.

Adjust the above command accordingly to suit your needs.

To create your files in a different directory, add the path of your choice, just before the name of your new files.

If you are unsure, here’s what that would look like:

Replace with your computers username.

Also, if you are planning on running any of these commands from a batch script you need to use two percentage signs instead of one, so that they are interpreted correctly.

Named Files (First, Second, Third):

Creating named files or, multiple files with different, specified names is quite similar.

Here is what that would look like:

The above command will create three files in your current directory with the following names: First.txt, Second.txt, Third.txt.

To make this command work for you, replace the names you want your files to have in the first parenthesis. And if necessary, replace, or adjust the second parenthesis with the command that will create your files the way you require.

The number of files that will be created depends entirely on how many file names you feed into the loop.

Once again to create your files in a different directory, add the target path just before the A parameter in the second parenthesis. Take a look at the above commands if you need a reference.

Finally, if you are planning on running this command from a batch script instead of the command line, you need to use two percentage signs instead of one so that your command is interpreted correctly.

Summary:

• Navigate to the directory you want to create a file into using the “CD” and “Dir” commands.
• Use the echo command along with the greater than redirector to create any type of file.
• Take advantage of the %Date% automatic variable and embed the current date into the names of your files.
• Use the FSutil command to crate a new file with a specific size.
• Enter a path before the name of your file to create it in any directory.
• Use a For loop to create multiple numbered or named files at once.

That’s It!

You now know how to create many types of files directly from the command prompt.

If you liked this short guide take a look at a few of our other posts related to the windows command line, or if you really liked it consider enrolling in our video course where you will learn the ins and outs of the Windows command Line.