I've 80.000 files in a folder and I need to rename all them from
filename.jpg
to
._filename.jpg
in Windows environment, I guess from dos. The reason is that I've compressed these files into a tar.gz from unix and copied into windows and for some reason the filenames have changed.
Could you tell me what's the command to do it ? thanks
Here's a way using PowerShell:
Navigate to your folder and run this command
Get-ChildItem *.jpg | Rename-Item -newname {"._" + $_.Name}
Extra bonus short version:
gci *.jpg | ren -newname {"._" + $_.Name}
I have 2 solutions:
All files are in the same folder
run the following from command prompt on that folder:
for /f "delims=¯" %i in ('dir /b /on') do ren "%i" "._%i"
complete solution when there are files in subfolders AND when you wanna to replace the "n" first characters with a string you want :D
path: put inside "" the root path of your files (e.g. "C:\documents and settings\user\desktop\new folder"numfirstchars2replace: put a number with the first characters to replace (in your case, 2)str2put: put a string to be added as a prefix of the new filename (in your case, ._)@echo off
::only to tell user what this bat are doing
echo.1.initializing...
::enable that thing to allow, for example, incremental counter in a for loop :)
echo.- EnableDelayedExpansion
SETLOCAL EnableDelayedExpansion
::variables
echo.- variables
:: - place here the absolute root path of your files
set path="put here where are the root folder of your files"
set pathbak=%cd%
set numfirstchars2replace=2
set str2put=._
::go to %path% and its driveletter
echo.- entering the path you want
for /f "delims=¯" %%i in ('echo.%path%') do %%~di
cd %path%
::search all subfolders and save them to a temp file
echo.- searching for subfolders
echo.%path%>%temp%\tmpvar.txt
for /f "delims=¯" %%i in ('dir /s /b /on /ad') do echo."%%i">>%temp%\tmpvar.txt
::execute command for root folder and all found subfolders
echo.
echo.2.executing...
for /f "delims=¯" %%i in (%temp%\tmpvar.txt) do (
cd %%i
echo.- in folder: %%i
for /f "delims=¯" %%j in ('dir /b /on /a-d') do (
set newname=%%j
set newname=!newname:~%numfirstchars2replace%,1000!
echo.- renaming from "%%j" to "%str2put%!newname!"...
ren "%%j" "%str2put%!newname!"
)
)
echo.
echo.3.exiting...
::return to %pathbak% and its driveletter
for /f "delims=¯" %%i in ('echo.%pathbak%') do %%~di
cd %pathbak%
@echo on
If they are all in the same folder, you could select them all with Control + A and then hit F2 to rename one of them. All subsequent files will be named file(2), file(3), etc
Try Powershell (preinstalled in Windows 7):
Get-Childitem /path/to/your/files | foreach-object { move-item $_ $("._" + $_.name) }
(tested it in my download-dir.)
Edit: Siim K's code will append an additional ".jpg" to every "._filename.jpg". Remove that last ".jpg" in Siim K's code and you have a short, elegant code to rename your files.
You can use the built in rename or ren command:
ren *.jpg ._*.jpg
Though, as with all these things, try it on a directory containing just a few files first.
I've always found Flash Renamer to be a good tool for renaming files in batches.
It has trial and full versions ($20) and can rename files based on meta data - very useful for renaming MP3 files which I what I use it for mostly.
If your looking for a user friendly way of renaming in bulk you could try the free tool Ant Renamer, there's a huge list of actions you can take and it also gives a handy preview before you do any renaming. I use it a lot when messing with my music, photo or video librarys.
I have used this freeware File Renamer program with great results. Many different filters and options, plus it gives you the ability to test results. A little outdated UI perhaps but works like a champ.
