Create a big file on Linux
Written byPhuoc Nguyen
Created
17 May, 2021
Category
Tip
Tags
Command Line
Sometimes we need to have a random file of given size. We can name some common examples such as
- Test the file upload functionality
- Test if the application is able to handle a large set of data
On Linux we can create an empty file of particular size with the
`dd` command. The following command creates `sample.txt` file of `1GB`:shell
$ dd if=/dev/urandom of=sample.txt bs=1G count=1The file size is the result of
`bs * count` in bytes.#See also
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Phước Nguyễn