
If the File(s) were successfully renamed %ERRORLEVEL% = 0 Note that most programming languages use = assignments the other way around: Let dest=some_source_expressionįor this reason the use of = is not recommended in this context. Multiple delimiters are treated as one, so all the following are equivalent: The delimiter between the source and target is normally a space but can be any of Comma,

If 8.3 name generation is disabled then RENAME always gives the expected result. If 8.3 name generation is enabled, the SourceMask matches the original long name, the initial rename generates a short name that still matches SourceMask and sorts later in the alphabet, then this bug might be triggered. If the result of the first rename operation still matches the SourceMask then the same file can be renamed twice. When 8.3 filenames exist then the SourceMask will first look for a match against the long file name, and then against the short file name. 8.3 Filename bug - a single command can rename the same file twice! It appears these same rules also work for the target name of the COPY commmand.
#BATCH FILE RENAME FILES REMOVE SPACES WINDOWS#
(Note: a valid Windows file/folder name cannot end with. Matches itself or it can match the end of name (nothing) if no more characters remain. It will match as little or as much as is needed to enable subsequent characters to match.Īll non-wildcard characters must match themselves, with a few special case exceptions. * Matches any 0 or more characters including. However it will match nothing without failure if at name end or if the next character is a. This wildcard is greedy - it always consumes the next character if it is not a. The wildcards work here the same as with any other command that filters file names. The sourceMask works as a filter to determine which files are renamed. TXT in the 'C:\demo\' folder and all sub-folders:įor /R %%G in (*.LOG) do Echo REN "%%G" "%% ~dpnG.TXT" RENAME is a synonym for REN Rename files within subdirectoriesīy default REN with a wildcard will only rename the files in a single folder, to recurse down into sub folders use a FOR /R command, after first changing to the top level directory.Į.g. If you issue a wildcard rename that matches only directories then a syntax error will be thrown. REN can also be used to rename directories, but this behaviour is undocumented.Ī simple REN folderA folderB will work, but wildcard operations are not supported for directories, if you issue a wildcard rename that matches both files and directories, the file(s) will be renamed and the folders will be ignored. Instead use " MOVE /y" to rename and replace an existing file. If TargetMask matches an existing file name, the following error message appears: Duplicate file name or file not found.Characters represented by wildcard characters in TargetMask will be identical to the corresponding characters in SourceMask.You cannot specify a new or different drive or path for TargetMask - use the MOVE command instead.REN SourceMask TargetMaskīoth the SourceMask and TargetMask can contain * and/or ? wildcards.Īs described below, the behavior of these wildcards is slightly different for a source or a target mask. If you want to do this from within a batch (.

When typed directly into the Command Prompt ( CMD.EXE).

So you can recursively rename files to lowercase with this command: for /f "Tokens=*" %f in ('dir /l/b/a-d/s') do (move /y "%f" "%f")īecause it turns out that Move can cope with directory paths. … you cannot specify a new drive or path for your destination file. To make it recursive, but it doesn’t work,Īllows you to specify a drive and path with filename1 (the source),įilename2 (the destination) must be just a filename. Sawny suggested a simple modification to loftysnake’s answer Works for the current directory but does not search subfolders. The accepted answer to this question, by loftysnake, If /i "%folder:~0,1%" NEQ "d" LwrCase_Folder - %1 is NOT a folder.&endlocal&goto :EOFįor /f "Tokens=*" %%f in ('dir %sw%') do ( If not exist %1 LwrCase_Folder - %1 NOT found.&goto :EOF If Syntax: LwrCase_Folder FullyQualifiedDirectoryName&goto :EOF NOTE: LwrCase.bat makes use the the /L switch of the DIR command, which returns lower case names. Where FullyQualifiedDirectoryName is the fully qualify folder path, and /S is an optional parameter that will also rename files names in all sub-folders. To rename all the files names in a directory, use: LwrCase_Folder FullyQualifiedDirectoryName Where FullyQualifiedFileName is the fully qualified file name to be renamed. To rename a file name to lower case, use: LwrCase FullyQualifiedFileName Using only standard commands, I have scripted LwrCase.bat and LwrCase_Folder.bat, to rename a file name to lower case, or rename all file names in a folder to lower case.
