All Questions
Tagged with compression archiving
108 questions
0
votes
1
answer
49
views
Were my original files deleted after cancelling a compression operation in WinRar
I want to know if due to cancelling an ongoing compression operation I might have deleted my files permanently. Does WinRAR delete after all files are archived or line by line ? Or does it confirm ...
- 11
0
votes
0
answers
63
views
WinRAR - Span Archives instead of splitting (Internet Archive)
I'm having a small issue trying to back up data to the Internet Archive.
I have tried to used 7zip to split files into certain sizes (such as 7G or 25G) to upload better, but IA won't accept ...
- 1
1
vote
1
answer
2k
views
absolute fastest way to zip (not compress) larger files in 7zip?
I need to know the absolute fastest way to zip (not compress) larger files in 7-Zip.
By large files I mean 1Tb or so, this will be done often (multiple times per day).
I tried WinZip because it has ...
- 29
1
vote
1
answer
437
views
What compression options does 7Zip use when you add files with a drag-drop?
When you create an archive with 7Zip, you get a dialog showing you a bunch of compression options. However when you drag-drop some files into an already-open archive in a 7Zip window, you just get a &...
- 3,018
1
vote
3
answers
1k
views
Increase robustness of 7z LZMA archiving?
I create backups of several PHP projects like Wordpress etc, which contain a huge amount of small files. Hence I zip them into one archive to make transfering and checking the file easier / faster. I ...
- 350
0
votes
1
answer
50
views
Copy entire drive in use per batches
I need to copy entire network drive (approx. 1TB) that is constantly in use to a remote location but in that remote location, no file can be larger than 1.3GB.
How can I achieve this?
I cannot first ...
- 11
2
votes
1
answer
627
views
Zip encryption, individual files or the whole directory/file tree of the zip archive
As an example fuse-zip shows a directory list, when executed on an encrypted zip archive. The individual files then cannot be read or written to. But the directory tree and the individual file names ...
1
vote
1
answer
892
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Archive binary has reversed hex signature
Context
This is a repost of my StackOverflow question which was incorrectly asked, as it does not relate to programming.
I'm playing Bandit on OverTheWire, and level thirteen requires unzipping ...
0
votes
0
answers
211
views
Varying archive size under multi-threaded compression
When using 7-zip with 7z u -uq0 -ssw -mx9 -stl files.7z files (update-synchronize ultra-compression) I think I've seen a slight random size difference of the same archive triggering my backing-up ...
- 121
5
votes
4
answers
6k
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How can I compress a large collection of images together (for backup purposes) as densely as possible?
I have a fairly large (by personal use standards) collection of images. This is roughly in the range of 150k files of a total size of 200GB. It is by and large PNG and JPG files, each making up about ...
- 51
0
votes
0
answers
1k
views
How can we unlock a 7z archive (w/ password) without extracting it?
The question in the title. I am aware;
7z x blah.7z -p'mysecretpassword'
exists, but I wish to only unlock the archive - allowing my Python script to access it. Not extract it.
The reason I can't ...
- 103
2
votes
0
answers
114
views
Compress a folder with internal complex folders tree and UTF-8 mixed languages files and formats for archive
I have a cloud folder on my hard-drive which I want to archive, in-order to do so I would like to compress it using best of choice compressor for that task :
Complex sub-tree of internal folders with ...
- 121
4
votes
1
answer
4k
views
What types of compressed archives does Microsoft Windows understand by default (Windows 10)
What file formats of compressed archives does Windows 10 natively know how to work with on fresh install?
There are many file formats for compressed archives. To name a few:
.tar.gz
.zip
.rar
.7z
etc
...
- 1,591
0
votes
0
answers
2k
views
Error when tar a compressed file
I try to install krona tools, so I downloaded its archive first as follows:
curl -LOk https://github.com/marbl/Krona/releases/download/v2.7/KronaTools-2.8.tar
then
#untar
tar -xvf KronaTools-2.8.tar
...
- 1
1
vote
0
answers
11k
views
7-Zip Warning: "There are some data after the end of the payload data"
I just got this error message while trying to extract a rar archive that is split in several parts using 7-Zip:
1 C:\Users\Admin\Downloads\FileName.part1.rar
Warnings:
There are some data ...
- 11
1
vote
0
answers
938
views
How can I best use the compression options of 7z?
I have about 900 GB of uncompressed SQL dumps which have a very large amount of common data. I've been using 7z with the -mx=9 option because I care much more about the size of the archive than how ...
- 147
1
vote
0
answers
1k
views
Dictionary Size and Compression Method
I have knowledge about archiving, since I already try it so many times in a basic way just right click and add to archive then press ok, but it is my first time to modify it using the settings.
I want ...
- 11
2
votes
2
answers
4k
views
Find out which version of which specific program created a (partial) ZIP archive
Is it possible to determine which specific version of which specific program created a given ZIP archive, based on its metadata?
And also, is the outcome of a ZIP / RAR compression affected by the ...
- 875
0
votes
2
answers
4k
views
Uncompress .tar.gz format getting error "tar: Unrecognized archive format"
I've downloaded a ".tr.gz" file with a size of 10 GB from here (after downloading completed, I renamed it and deleted .partb to become dataset cleaned.tar.gz) while I'm trying to uncompress ...
- 101
3
votes
2
answers
939
views
How to compress one folder into multiple .zip, all independently extractable?
I work with some big image datasets containing millions of images, and I often need to compress the results of each step of processing to be uploaded as backup.
I have seen that some datasets can be ...
- 131
0
votes
0
answers
53
views
Extract zip files and recompress them into 7zip files [duplicate]
I'd like my zip files to be extracted, then recompressed into 7zip files.
Example:
Before:
$ ls
001.zip
002.zip
003.zip
--snip--
997.zip
998.zip
999.zip
After:
$ ls
001.7z
002.7z
003.7z
--snip--
997....
- 121
2
votes
0
answers
1k
views
Archive a big folder with large number of smaller and big files
I need to archive a folder from normal drive into tape in organization data storage and might retrieve them in the later stage. My scenario is
a large folder with size from 10 GB to 300 GB
The folder ...
- 135
1
vote
0
answers
1k
views
How to delete a file inside a zip archive without decompressing?
I have a large zip file and I can't decompress it because I don't have enough space so I am going through all the files inside and first copying them to an outer folder and then deleting them. I can ...
- 121
0
votes
0
answers
130
views
"Smart" fast compression for archiving mixed content?
I would like to backup a computer folder quickly to an archive format (e.g. tar, zip, 7z, gz, etc.). The folder contains many files:
Some are text files that can achieve a good compression ratio. ...
- 129
0
votes
0
answers
16
views
How create Makeself self executable archive file in LINUX? What is the steps to create Makeself self executable file in any Operating System? [duplicate]
I want to create a self-executable archive using Makeself.
I referred to makeself.io but didn't understand anything from it.
What are the steps for making a Makeself self-executable archive?
If I run ...
0
votes
2
answers
7k
views
How can i compress (7z) multiple files in one click/command
I have a folder filled with documents i would like a 7z for each document separately.
There are over 800 files.
I'm using windows 10 and specifically want the archive in 7z format.
I've highlighted ...
- 305
0
votes
1
answer
846
views
Is it possible to make a encrypted Zip file unhackable [closed]
I want to encrypt a Zip file. But I'm not sure it can be safe because I’ve found some tips about how to recover a .Zip with forgotten password with iSumsoft or NSIS in this article: “How to Open ...
-1
votes
1
answer
2k
views
Choosing compression method and settings for mp4 files
I've got a hard drive filled up with videos, and want them to take up as little space as possible.
Video encoding:
Around 20000 kbps datarate and bitrate
30 frames/second
H.264 AVC
Audio ...
3
votes
1
answer
5k
views
Do 7z archives compress each file individually or compress everything together as one?
I read somewhere (I can't remember where) that compressing files into a .tar.xz resulted in better overall compression ratios than .7z archives because archive+compression formats like zip, rar, and ...
- 1,350
0
votes
0
answers
178
views
Editing a file inside an archive
Are there other programs that allow you to edit a file inside an archived file?
For example, 7-zip allows you to edit the file inside the archive. But it changes the compression of the other files (i....
- 61
1
vote
2
answers
5k
views
Powershell script to compress all child directories and move to archive; keep file structure. Delete originals
I have a task where I need to compress all child directories (child is each day of a month) within each sub-parent directory (Month) and move to an archive folder. Then delete the originals. Also an ...
- 11
1
vote
1
answer
601
views
Error during running mysqldump for creating tar archive
I created mysqldump for creating tar archive but every time I received notice
tar: Cowardly refusing to create an empty archive
Using gzip created archive normally but with tar I can't move forward.
...
1
vote
1
answer
5k
views
How to fix a corrupted 7z archive?
I have a corrupted 7zip file , the sources have been deleted
and i tried to understand https://7-zip.org/recover.html but I couldn't fix them:
When I tried to extract it shows:
user997826
0
votes
1
answer
1k
views
7zip - Delete files not matching extension
I have an existing archive.7z, which contains some .txt, .bin and .log files.
I would like to delete all files with extension different from .txt using 7zip command line from Windows cmd.
I try ...
- 137
8
votes
3
answers
2k
views
Which archival formats efficiently extracts a single file from an archive?
Extracting a single file from a zip file is a fast operation, so I assumed this would be true for TAR as well, but I learned that even though a TAR file is without compression, it can take a looong ...
- 1,369
2
votes
3
answers
2k
views
Does compression into one large archive result in better compression than individual compression of folders?
I have several folders of around 8GB or so. Together these folders total around 60GB of data. I can compress these folders one of two ways: either individually, creating one compressed archive for ...
- 13.4k
0
votes
1
answer
241
views
What needs to be changed in this archiving script to only archive specific file types?
I made this script based on past answers from superuser, but now need to only archive specific file types. I messed around trying to use wildcards but nothing I tried seemed to stick.
If I wanted to ...
3
votes
1
answer
6k
views
CPU barely utilized when compressing with 7-zip
When I try to compress with 7z maximum compression, my CPU utilization is under 20%. Only one of the cores is 100% loaded, and not even 100% of the time.
I'm on a fast SSD, so it's definitely not ...
- 31
1
vote
1
answer
1k
views
How to compress a bunch of files efficiently?
Let's say you have a lot of files to archive. They are in several different file formats (txt, docx, pdf, png, jpg, mp3, zip, etc.).
What are the best practices to compress them all, so that they ...
- 133
0
votes
0
answers
514
views
How to view specific path inside tar.gz?
tar -tf file.tar.gz let's me view inside the whole archive. How do you view a specific path without viewing the whole thing? E.g., I want to view only /path/foo/
Update:
This command almost works ...
- 5,543
0
votes
0
answers
505
views
7-zip "incorrect command" on context menu
I installed the latest version of 7-zip in a clean install of Windows 7 and all of the context menu items for "create archive" result in Incorrect command line. I've uninstalled it, and installed the ...
- 589
0
votes
0
answers
546
views
How to improve zip file's compression using 7za command line 7zip
When I pack my project with 7zip, it has 7MB. When I pack it with JSZip the file has 17MB.
Now I need JSZip to perform some subtle changes which 7zip does not allow (at least not for zip anyway). ...
- 4,620
1
vote
2
answers
4k
views
Windows in-built compression command without utilizing any external tools
I want a Windows (7 onward) command line compression and archiving command/script, which doesn't require any external tools or utilities, including PowerShell, as I am not much of Windows scripter. It ...
- 482
2
votes
1
answer
3k
views
What makes a tar archive seekable?
It seems a tar archive being seekable can make a large difference when listing or extracting just a few files. Unfortunately the man page is really scarce on information. It seems that compressed ...
- 6,404
3
votes
2
answers
739
views
Does 7zip use disk space while testing 7zip archives?
As question above, does 7zip (more specifically p7zip on Linux) use disk space while testing archives? Since I only have a 2TB drive to work with and with every archive ranging 800GB-1TB in size, I ...
- 165
0
votes
2
answers
2k
views
Location of password in RAR archive
I have to extract a PDF book from a PW protected RAR file.
I successfully extracted the compressed file with 7-Zip, but when I try to open the decompressed PDF book I am asked for a PW. There are ...
1
vote
2
answers
729
views
Compare compression: gzipping individual files vs. gzipping tar of same files
Consider a hypothetical archive format that does the following under the covers, given a list of files to pack:
gzip each file individually
Tar the gzips together
Contrast this with traditional tar ...
- 11
0
votes
0
answers
2k
views
How to extract zipped archive hidden behind an image file?
I zipped few files using winRAR and hide those behind an image file using the following command :
Copy /b imagename.jpg + filename.rar finalimage.jpg
The operation was successful, however the ...
- 101
7
votes
4
answers
6k
views
What is the reason that .tar.gz files have two extension instead of one?
From what I understand this type of file is an archive just like RAR files are. Why isn't there the .targz extension plain and simple? Is there more than one program that is creating this kind of file ...
- 1,863
3
votes
2
answers
14k
views
Use ISO instead of ZIP or RAR to store files?
I have been doing some backups of my old files and lately I was wondering if there is another method of storing and compressing files other than ZIP or RAR.
In my case, I want to store various group ...
- 133