批量重命名RAR分卷文件并保留分卷编号的技术问询

To achieve your desired renaming pattern—replacing the original prefix while preserving the numeric suffix and split identifier—here's the adjusted batch script with step-by-step explanations:

Adjusted Batch Code #

SETLOCAL EnableDelayedExpansion
REM Set your target directory here
CD "D:\test\rename"

FOR /F "usebackq tokens=* delims=" %%A IN (`DIR "*.rar" /B /A:-D`) DO (
    REM Extract the filename without the .rar extension (e.g., "File-01.part1")
    SET "FullNameNoExt=%%~nA"
    
    REM Split the name into two parts using the dot before "part" as the delimiter
    FOR /F "tokens=1,2 delims=." %%B IN ("!FullNameNoExt!") DO (
        REM %%B = original base name (e.g., "File-01"), %%C = split identifier (e.g., "part1")
        
        REM Extract the numeric portion from the original base name (everything after the hyphen)
        SET "OriginalBase=%%B"
        SET "NumericSuffix=!OriginalBase:*=-!"
        
        REM Construct the new filename and rename the file
        RENAME "%%A" "Newfile__!NumericSuffix!.%%C%%~xA"
    )
)
ENDLOCAL

Key Changes & Explanations #

• Splitting the Filename: We first split the filename (excluding the .rar extension) into two parts using the dot before part as a delimiter. This separates the original base name (like File-01) from the split identifier (like part1).
• Extracting the Numeric Suffix: Using batch variable substitution !OriginalBase:*=-!, we capture everything after the first hyphen in the original base name. This pulls out the 01 from File-01 cleanly.
• Building the New Name: We combine your fixed prefix Newfile__, the extracted numeric suffix, the split identifier, and the original .rar extension to form the exact target filename you want.

Notes #

• If your original base names use a different separator (not a hyphen), adjust the substitution pattern. For example, if the original was File_01.part1.rar, change !OriginalBase:*=-! to !OriginalBase:*=_!.
• Always test the script on a copy of your files first to confirm it behaves as expected.
• The script only processes .rar files in the specified directory and ignores subdirectories.

内容的提问来源于stack exchange，提问作者Hung PD