batch rename files
Command Prompt
You can use the rename – or ren – DOS command in a Command Prompt window to rename multiple files at once. It accepts the wildcard character – * – to match multiple files. The quickest way to open a Command Prompt window at your desired location is to hold Shift, right-click in the folder, and select “Open command window here.”
The most obvious use case for the rename command is changing multiple file extensions at once – something you can’t do in Windows Explorer. The following command will rename all .html files in the current folder to .txt files:
ren *.html *.txt
This command doesn’t offer a lot of power on its own, although it can be integrated into more complex batch scripts.
PowerShell
PowerShell offers much more flexibility for renaming files in a command-line environment. Using PowerShell, you can pipe the output of one command – known as a “commandlet” in PowerShell terms — to another command, just like you can on Linux and other UNIX-like systems.
The two important commands you’ll need are Dir, which lists the files in the current directory, and Rename-Item, which renames an item (a file, in this case). Pipe the output of Dir to Rename-Item and you’re in business.
After you launch PowerShell, use the cd command to enter the directory containing your files. You should put the files in their own directory so you don’t accidentally rename other files.
Dir | Rename-Item –NewName { $_.name –replace “ “,”_” }
Replace the “ “ and “” parts of the command to replace other characters in file names.
Post by: Jalen Wang (转载请注明出处)