We can use the built-in command line utility rename to rename a file. Note that this command is just to rename a file keeping it in the same location and can’t be used to rename as a file in a different folder.
Syntax of rename command:
rename file_path new_name
rename d:\data\file1.doc file2.doc
After executing the above command we’ll have file2.doc in the folder d:\data
Change file extensions in bulk using rename command:
We can change the extension of a set of files in one step using rename command. For example, you have set of files with extension .html and you want to rename them to .txt. You can do this with the below command
rename *.html *.txt
Rename command works in all Windows versions – XP, Vista and Windows 7.