Batch rename file extensions, including subdirectories

Question

I'm renaming empty file extensions with this command:

rename *. *.bla

However, I have a folder with hundreds of such subfolders, and this command requires me to manually navigate to each subfolder and run it.

Is there a command that I can run from just one upper level folder that will include all the files in the subfolders?

Answer 1

You can easily do this and many more things with the Perl module File::Find.

#!perl

use strict;
use warnings;
use File::Find;

my $extension = 'bla';
my $directory = '/tmp/test';

print "Files renamed:\n";
find( \&wanted, $directory );

sub wanted {
    return if /\./;
    return unless -f $File::Find::name;

    if ( rename( $File::Find::name, "$File::Find::name.$extension" ) ) {
        print "    $File::Find::name -> $File::Find::name.$extension\n";
    }
    else {
        print "    Error: $! - $File::Find::name\n";
    }
}

Answer 2

this will allow you to enter dirs with spaces in the names. (note the double % is for batch files, use a single % for command lines.)

 for /f "tokens=* delims= " %%a in ('dir /b /ad /s') do rename "%%a\*." "*.bla"

Answer 3

Try this

for /R c:\temp %I in (*. ) DO Echo rename %I "%~nI.bla"

Answer 4

You can use for to iterate over subdirectories:

for /d %x in (*) do pushd %x & ren *. *.bla & popd

When using it from a batch file you would need to double the % signs:

for /d %%x in (*) do pushd %%x & ren *. *.bla & popd

Answer 5

@echo off
for /f "tokens=* delims= " %%i in ('dir /b/s/A-d') DO (
  if "%%~xi" == "" rename "%%~fi" "%%~ni.bla"
)

Thanks @Wadih M. http://stackoverflow.com/questions/1025410/find-and-rename-files-with-no-extention

Answer 6

I need to make this aswell, but in my case i need to edit all .log files to .txt files within C: and all subfolders how do you do this with batch ?