How to Rename Files in Linux?

Renaming files is one of the most common file management tasks in Linux. Whether you’re organizing documents, cleaning up downloaded files, managing photos, or maintaining server directories, knowing how to rename files efficiently can save significant time and effort.

Linux offers several ways to rename files, ranging from simple command-line commands for individual files to powerful batch-renaming tools that can process hundreds or even thousands of files at once. The flexibility of Linux makes it easy for both beginners and advanced users to handle file renaming tasks according to their needs.

In this guide, you’ll learn how to rename files in Linux using built-in commands and discover a bonus method for batch renaming files on Windows and Mac.

1. How to Rename Files in Linux?

1.1 Rename a Single File Using the mv Command

The most common way to rename a file in Linux is with the mv command. Although mv is primarily designed to move files, it can also rename them when the source and destination are in the same directory.

Syntax:

mv old_filename.txt new_filename.txt

Example:

mv report.txt annual_report.txt

After running this command, report.txt will be renamed to annual_report.txt.

To verify the change, use:

ls

This will display the updated filename in the current directory.

1.2 Rename Files in a Different Directory

You can also rename files located in other directories by specifying the full path.

Example:

mv /home/user/documents/file.txt /home/user/documents/new_file.txt

This renames the file while keeping it in the same folder.

1.3 Rename Directories

The mv command can also rename folders.

Example:

mv old_folder new_folder

This changes the directory name from old_folder to new_folder.

1.4 Rename Multiple Files Using a Loop

When dealing with many files, manually renaming each one becomes inefficient. Linux shell loops can automate repetitive renaming tasks.

For example, suppose you want to add a prefix to all .jpg files:

for file in *.jpg; do
    mv "$file" "photo_$file"
done

Files such as:

image1.jpg
image2.jpg
image3.jpg

become:

photo_image1.jpg
photo_image2.jpg
photo_image3.jpg

1.5 Batch Rename Files with the rename Command

Many Linux distributions include a utility called rename, which allows pattern-based file renaming.

Example:

rename 's/.txt/.md/' *.txt

This changes all .txt files to .md.

Before:

notes.txt
guide.txt
report.txt

After:

notes.md
guide.md
report.md

The rename command is especially useful for replacing text, changing extensions, and applying naming rules across large file collections.

1.6 Convert Filenames to Lowercase

Sometimes downloaded files contain inconsistent capitalization. You can standardize filenames using:

rename 'y/A-Z/a-z/' *

Example:

Vacation.JPG
Report.PDF
Photo.PNG

becomes:

vacation.jpg
report.pdf
photo.png

This makes filenames more consistent and easier to manage.

1.7 Add Sequential Numbers to Files

If you need ordered filenames, a shell script can automatically add numbers.

Example:

count=1
for file in *.jpg; do
    mv "$file" "image_$count.jpg"
    ((count++))
done

Result:

image_1.jpg
image_2.jpg
image_3.jpg

This method is commonly used when organizing image galleries, scanned documents, or project assets.

1.8 Rename Files with a Graphical File Manager

If you prefer a graphical interface, many Linux desktop environments include built-in renaming features.

Popular file managers include:

• Nautilus (GNOME)
• Dolphin (KDE Plasma)
• Thunar (XFCE)
• Nemo (Cinnamon)

Most allow you to right-click a file and select Rename. Some also support bulk renaming through dedicated tools or extensions.

This option is ideal for users who are less comfortable with terminal commands.

2. Bonus: Batch Rename Files on Windows and Mac with RenameKit

While Linux offers powerful command-line tools, users on Windows and macOS often look for a simpler way to rename large numbers of files. This is where RenameKit can help.

RenameKit is a dedicated batch file renaming application designed to make file organization fast and straightforward. Instead of writing scripts or remembering command syntax, users can apply renaming rules through an intuitive interface.

Some common tasks you can perform with RenameKit include:

• Batch rename hundreds or thousands of files
• Add prefixes and suffixes
• Replace text in filenames
• Remove unwanted characters
• Change letter case
• Add sequential numbering
• Preview results before applying changes

How to rename files using RenameKit:

• Install and launch RenameKit on your Windows or Mac device.
• Quickly add files or folders by dragging and dropping them into the workspace.
• Apply powerful renaming rules, including text replacement, automatic numbering, metadata-based naming, and more.
• Preview the changes in real time to ensure every filename looks exactly the way you want.
• Click Batch Rename to process all selected files instantly and save valuable time.

3. Conclusion

Renaming files in Linux can be as simple or as powerful as your workflow requires. The mv command is perfect for quickly renaming individual files and folders, while shell scripts and the rename utility make it easy to process large groups of files efficiently.

For Linux users who enjoy command-line flexibility, these built-in tools provide extensive control over file management tasks. However, users on Windows and macOS may prefer a more visual approach to batch renaming.

If you frequently need to rename multiple files, add numbering, replace text, or standardize filenames across large collections, RenameKit is an excellent solution. Its user-friendly interface, batch processing capabilities, and preview features help streamline file organization while reducing the risk of mistakes.

No matter which platform you use, mastering file renaming techniques can significantly improve productivity and keep your files organized. For fast and reliable batch renaming on Windows and Mac, RenameKit is a tool worth considering.