Zip.002 Extract

[Vernie Montagna]

Supossethat I have some files that I downloaded from a server and they are zipped with 7zip in multiple parts, the format is something like this myfile.zip.001, myfile.zip.002, ..., myfile.zip.00n. Basically, I need to extract the content of it in the same folder where they are stored.

So you need to first concatenate the pieces, then repair the result. cat test.zip.* concatenates all the files called test.zip.* where the wildcard * stands for any sequence of characters; the files are enumerated in lexicographic order, which is the same as numerical order thanks to the leadings zeroes. >test.zip directs the output into the file test.zip.

For a multipart zip coming from a Google Drive download I tried several of the explained methods but didn't work (well). I could finally do it in a simple way from the terminal:unzip filename.zip.001when finished extracting the same with the next part:unzip filename.zip.002and so on ...

In general, the HIRO will not create a single zip file larger than 1.5 GB in size because files of that size can often cause problems when you attempt to open them (particularly with older or 32-bit operating systems). However, it is not uncommon for users to request image data in amounts that would exceed this size even with the best compression software available. As a result, the HIRO takes advantage of a zip feature known as "volumes" (also known as a split or spanned archive).

When zipping large amounts of data, the HIRO will use its archiving software to split the large zip file into several volumes. Each volume has the same maximum size; once that size is reached for the first volume file a new volume file is created. This process continues until all of the data has been compressed. For example, assume you have requested a large number of scans and when compressed your data shrinks to 4.75 GB in size. If the HIRO were to provide you with a single 4.75 GB zip file, you might encounter problems when you attempted to open or unzip it (in fact, zip files of this size are impossible to open on 32-bit systems). Splitting the zip file into 1 GB volumes would circumvent this issue, and would look like this:

Although zipping in this manner splits the zip file into smaller files, it is still technically a single zip archive (that is, it is not five individual zip files). To successfully unzip the archive, you will need all the files, and you should only attempt to unzip the first volume (the file ending in .zip.001). Your zip program will automatically recombine the volumes and unzip everything at once. Zipping data in this manner is still considered lossless compression, so all of your data will be intact in its original form.

Unfortunately, the zip utility that is built into Windows cannot unzip split archives. To unzip split archives under Windows, the HIRO recommends the 7-Zip Utility. This free utility is relatively simple to use and can compress and uncompress files in a wide variety of formats. To unzip the example above, you can right-click on the MyImageData.zip.001 file (after you've installed 7-Zip), select the 7-Zip menu, and then choose one of the "extract" options.

Unfortunately, the zip utility that is built into OS X cannot unzip split archives. To unzip split archives under OS X, the HIRO recommends the Keka File Archiver Utility. This free utility is relatively simple to use and can uncompress files in several formats. To unzip the example above, double-click on the MyImageData.zip.001 file after you've installed Keka. The Linux p7zip command line program is also available for OS X. The HIRO is only able to provide limited support for Macs.

To unzip split archives under Linux, the HIRO recommends the p7zip utility. This command line utility is included by default in many flavors of Linux, and is available as an RPM package. To unzip the example above, you would use the following command:

The 'x' option will extract the archive while maintaining full paths. To learn more about the 7za command, the HIRO recommends you review the 7za man page as well as the shared documentation installed by the package. It's quite extensive.

Might as well take advantage of UNIX in the Terminal, and perform the following in the folder containing the split takeout-*.zip files. An assumption is that Google was using zip, and not 7zip or rar in the original zip file. Pay attention to your available space as you will need another 68 GB or so to merge these split zip files, and even more storage to unzip the merged zip file.

No, sorry. I want to extract all of them. They are one 68GB archive that was split in to 2GB ZIPs by Google. The problem is when I extract all the files it creates multiple folders and it's a big mess. I can see that it is supposed to be one folder structure, but I can't get macOS to extract them all to the same folder, or merge the ZIPs to one giant ZIP and then extract that...

In most cases, compressing and combining files into an archive reduces those files' size to the point where users can easily email them, upload them to the internet, or otherwise share them with others. However, if an archive has a large file size, users may still have difficulty sharing that archive with others. In these cases, users may split their archive into several smaller files, which can then be shared and recombined to access the file(s) they contain.

For example, a user sharing hundreds of image files online may package those images into an archive and then split that archive into several pieces. Other users who want to access those images can then download each piece of the archive and use an archive utility to extract the images.

Split archives are often saved in a set of files that use the same base filename and the .001, .002, .003, and so on extensions. These ascending numeric extensions denote that the files are just one part of a multi-part archive. Usually, all pieces of a split archive are stored in the same location, allowing users to easily access and extract files from the split archive.

Note that, because several programs can create split archives, some split archives are formatted differently than others. If you're having trouble opening a split archive in an archive utility, it might be because the program you're using does not support that split archive format (or, because you do not have all of the split archive's pieces).

The FileInfo.com team has independently researched the Split Archive Part 2 file format and Mac and Windows apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

There are two common ways of squeezing large files into smaller sizes: ZIP and RAR. The ZIP format is much more common, but there are times when RAR works better, especially when the file is particularly huge, such as an application or a two-hour HD video.

Both ZIP and RAR use different compression techniques, and RAR has the added benefit of dividing a single file into several pieces. Instead of sending someone a 20 GB file, you can use RAR to chop it up and compress it into a few 200 MB files instead.

To open ZIP files, you can use Windows. To open RAR files, you can use WinRAR, which is the software made by the company that invented RAR technology. To open .001 files, you need another program, such as HJSplit, 7-Zip or File Joiner.

The best way to determine which kind of file you have is to look at the file extension. If you can't see file extensions in File Explorer or on your desktop, right-click the file and select Properties.

ZIP is the most common file format to compress (or zip up) files. If you have a Windows 10 computer, you don't need any special software. Double-click the ZIP file, and Windows automatically decompresses it and opens it for you with its compression utility.

ZIP can compress multiple files into one file. It's actually a ZIP folder, and if you select it in File Explorer, you can see the contents as you would in any other folder. However, ZIP cannot chop a large file into smaller pieces.

If you have one or more RAR files to open, you can use WinRAR, which is free to use as a 40-day trial. A single-user license costs $29 should you need to use it beyond the trial period. If someone used WinRAR to cut a large file into smaller pieces, they will have similar names, such as sample0.rar, smaple1.rar, sample2.rar and so on.

If you have files with .001 extension, it's unlikely WinRAR or the compression tool that comes with Windows 10 can open them. That's because these files aren't compressed. Rather, they are parts of a larger file that was cut into smaller chunks and named in a series with the same file name and a numbered extension, such as sample.001, sample.002 and sample.003.

The file can be split and rejoined by only a limited number of programs, such as HJSplit, 7-Zip or File Joiner. Download and install one of these programs. These three utilities are freeware, so you don't have to pay for them.

Depending on which utility you chose to use and which version it is, you may be prompted to select the additional files. However, in most cases, it can locate the other files in the same folder automatically. When the utility has finished extracting and assembling the pieces, your file is in the destination folder you selected.

A published author and professional speaker, David Weedmark has advised businesses on technology, media and marketing for more than 20 years. He has taught computer science at Algonquin College, has started three successful businesses, and has written hundreds of articles for newspapers and magazines and online publications including About.com, Re/Max and American Express.

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