Linux command line to create file

How to create a file in Linux from terminal window? [closed]

• touch /path/to/file for an empty file
• somecommand > /path/to/file for a file containing the output of some command.

 eg: grep --help > randomtext.txt echo "This is some text" > randomtext.txt 

UNIX is not a command line environment, but a family of (very different) OSes. That said: Yes, this should work on most Unices

touch will work in UNIX, because it’s a standard tool. The somecommand example will work because it uses standard syntax. The nano sample may not work because an editor named nano may not be installed (nano is not standardized). The standard editor is ed and could be used in place of nano , or you could use $EDITOR to use your user- or system-configured default text editor, if there is one.

Additionally, you could simply say >/path/to/file to create an empty file, even if you don’t have touch .

Create the file using cat

Now, just type whatever you want in the file:

When I tried cat /etc/systemd/system/sample.service , it said «no such file or directory» rather than creating a new sample.service file.

@TylerH cat /etc/systemd/system/sample.service prints the file to the console cat > /etc/systemd/system/sample.service redirects standard input to the file (which is why you need to close standard input by pressing control-d.

There are several possible solutions:

Create an empty file

touch file >file echo -n > file printf '' > file 

The echo version will work only if your version of echo supports the -n switch to suppress newlines. This is a non-standard addition. The other examples will all work in a POSIX shell.

Create a file containing a newline and nothing else

echo '' > file printf '\n' > file 

This is a valid «text file» because it ends in a newline.

Write text into a file

"$EDITOR" file echo 'text' > file cat > file file 

These are equivalent. The $EDITOR command assumes that you have an interactive text editor defined in the EDITOR environment variable and that you interactively enter equivalent text. The cat version presumes a literal newline after the \ and after each other line. Other than that these will all work in a POSIX shell.

Of course there are many other methods of writing and creating files, too.

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How to Make a File in Linux from the Command Line – Create a File in the Terminal

Zaira Hira

Managing files from the command line is one of the most common tasks for a Linux user.

Files are created, edited, deleted, and used by many of the background OS processes. Files are also used by regular users to accomplish daily tasks such as taking notes, writing code, or simply duplicating content.

In this article, we will see three methods through which we can create files using the terminal. The three commands that we’ll discuss are touch , cat and echo .

Pre-requisites:

You should have access to the Linux terminal to try out the commands mentioned in this tutorial. You can access the terminal in either of the following ways:

• Install a Linux distro of your choice on your system.
• Use WSL (Windows Subsystem for Linux), if you want to use Windows and Linux side by side. Here is a guide to do that.
• Use Replit which is a browser-based IDE. You can create a Bash project and access the terminal right away.

Method #1: How to Create Files Using the touch Command

The touch command creates empty files. You can use it to create multiple files as well.

Syntax of the touch command:

Examples of the touch command:

Let’s create a single empty file using the syntax provided above.

Next, we’ll create multiple files by providing the file names separated with spaces after the touch command.

touch mod.log messages.log security.log

The above command will create three separate empty files named mod.log , messages.log , and security.log .

Method #2: How to Create Files Using the cat Command

The cat command is most commonly used to view the contents of a file. But you can also use it to create files.

Syntax of the cat command:

This will ask you to enter the text that you can save and exit by pressing ctrl+c .

When I enter the above command, my terminal output looks like this:

zaira@Zaira:~$ cat > sample.txt This is a sample file created using the "cat" command ^C

Note the ^C sign, which corresponds to Ctrl+c and signals to the terminal to save and exit.

Here are the contents of the created file:

zaira@Zaira:~$ more sample.txt This is a sample file created using the "cat" command

Method #3: How to Create Files Using the echo Command

The echo command is used to add and append text to files. It also creates the file if it doesn’t already exist.

Syntax of the echo command:

echo "some text" > sample.txt

echo "some text" >> sample.txt

The difference between > and >> is that > overwrites the file if it exists whereas >> appends to the existing file.

If you would like to follow along with the video tutorial of this article, here is the link:

Conclusion

In this article, we discussed three different methods to create files in the Linux command line. I hope you found this tutorial helpful.

What’s your favorite thing you learned from this tutorial? Let me know on Twitter!

You can read my other posts here.

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How to Create a File in Linux? [Linux Create File]

Do you know how to create a file in Linux? If not, then this article will help you with Linux create file commands.

List of content you will read in this article:

Anyone who uses Linux operating system daily should be familiar with how to create a text file in Linux or Linux create file command. A new file may be created using either the command line or the desktop file manager. You should have been granted writing permissions on the parent directory to generate a new file. If you don’t, you’ll get a permission denied mistake. This tutorial will provide brief information about how to create a file in Linux.

How to Create a Text File in Linux? [Varius Methods]

Now we will explain various methods to create a file in Linux easily:

1. Using the Touch Command to Create a File

We may use the touch command to change the timestamps of current files and folders and create new, empty files. The touch command is the simplest and most unforgettable way to generate new, empty folders.

To make a new file, use the touch command and the name of the file you want to make:

If filename.txt does not exist, the command above will generate it; otherwise, the timestamps will be changed. To make several files at the same time, split the file names with space as listed in the below Linux command.

touch filename1.txt filename2.txt filename3.txt

2. Using the Redirection Operator to Make a File

You may use redirection to take a command’s output and use it as input for another command or file. There are two ways to assign the output to a file. The >> operator appends the output to a current file, while the > operator overwrites it. In Linux, this is the quickest way to make a new file. When using redirection to create a file, you should take care not to delete a significant existing file. To make an empty zero-length buffer, specifically indicate the name of the file you want to construct after the redirection operator:

3. Using the Cat Command to Create Text File

Cat command is mostly used to read and concatenate files, but it can also create new ones. To make a new file, use the cat button, followed by the redirection operator > and the new file’s name. Click Enter to type your email, and then press CTRL +D keys to save the files.

4. Using the Echo Command to Create a File

The echo command outputs the strings passed as arguments to standard output, which can be forwarded to a register. For creating a new file in linux, type echo followed by the text you want to print, and then use the redirection operator > to write the output to the new file.

echo «Some line» > filename.txt

If you want to make an empty file, just type:

5. Using Heredoc to Create a File

Heredoc is a form of redirection that lets you give a command multiple lines of input. This approach is typically used when you need to generate a file from a shell script containing several text lines. To build a new file named filename.txt, for example, use the following code:

cat filename.txt
Some lines
Some other lines
EOF

Variables, special characters, and instructions will all be used in the heredoc’s body.

6. How to Create a Large Text File

You may want to generate a big data file for testing purposes on occasion. When you want to measure the write speed of your drive or the download speed of your link, this is handy.

6.1 Making use of the dd command

The dd command is most often used to copy and transfer files. To make a 2GB file called 2G.test, execute the following commands:

dd if=/dev/zero of=2G.test bs=1 count=0 seek=2G

The fallocate function is a command-line feature that allows you to assign actual disc space to data. The command below will generate a new file called 2G.test with a 2GB size:

Conclusion

Using different commands and redirection, we have learned how to create a file in Linux/Linux create file command using the command line functions. We hope that our described information can help you create a new file in Linux without having any trouble. if you have any other suggestions for creating a new file, you can comment via the below comment section.

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