windowsbatch-filecompression7zipwinrar

Batch file to compress subdirectories

I am trying to write a batch script that will run automatically compressing subdirectories using winrar or 7-zip:

Example:

 My Pictures
    Pics1 (Pics1.zip)
        File1.jpg
        File2.jpg
        File3.jpg
    Pics2 (Pics2.zip)
        File4.jpg
        File5.jpg
    Pics3 (Pics3.zip)
        File6.jpg
        File7.jpg
    ...

How do i write script.

Solution

  • (1) Using WinRAR:

    WinRAR includes two command-line tools, rar.exe and unrar.exe, where rar.exe compresses and unrar.exe uncompresses files.

    Both are located in the C:\Program Files\WinRAR folder in the installable version.

    Assuming, if there are multiple subfolders under C:\MyPictures and you want each subfolder to get its own .rar file , in the parent folder.

    From a batch file, this works for you:

    @echo off
setlocal
set zip="C:\Program Files\WinRAR\rar.exe" a -r -u -df
dir C:\MyPictures /ad /s /b > C:\MyPictures\folders.txt
for /f %%f in (C:\MyPictures\folders.txt) do if not exist C:\MyPictures\%%~nf.rar %zip% C:\MyPictures \%%~nf.rar %%f
endlocal
exit

    Explanation....

    1. It'll create .rar files of all the folders/subfolders under parent folder C:\MyPictures in the same parent folder.

    2. Then, it'll delete all the original folders/subfolders under parent folder C:\MyPictures and thus you'll be left only with the archives at the same place.

      • “a” command adds to the archive

      • “-r” switch recurses subfolders

      • “-u” switch. Equivalent to the “u” command when combined with the “a” command. Adds new files and updates older versions of the files already in the archive

      • “-df” switch deletes files after they are moved to the archive

    If you want to keep the original subfolders, just remove the -df switch.

    (2) Using 7-Zip:

    7-Zip is a file archiver with a high compression ratio.7z.exe is the command line version of 7-Zip. 7-Zip doesn't uses the system wildcard parser and it doesn't follow the archaic rule by which . means any file. 7-Zip treats . as matching the name of any file that has an extension. To process all files, you must use a * wildcard.

    Using 7zip command-line options in a batch file, below works for you:

    @echo off
setlocal
for /d %%x in (C:\MyPictures\*.*) do "C:\Program Files\7-Zip\7z.exe" a -tzip "%%x.zip" "%%x\"
endlocal
exit

    Where