Archiving can refer to the process of archiving files or the process of archiving data. File archiving is combining one or multiple files into one file or container. Data archiving is the process of relocating data that is no longer actively used to a separate storage area for long-term retention.

learn more… | top users | synonyms (2)

180
votes
18answers
19k views

What is the advantage of using 'tar' today?

I know that tar was made for tape archives back in the day, but today we have archive file formats that both aggregate files and perform compression within the same logical file format. Questions: ...
72
votes
20answers
84k views

Compressing with RAR vs ZIP

A lot of people are compressing files with RAR, sending compressed files with RAR and so on. ZIP is more standard and works on all platforms. Windows users have ZIP included and Linux users have no ...
55
votes
8answers
62k views

What’s a good way to extract .rar files on the Mac? [closed]

Anything built-in? (E.g. command line tools.) Any well-regarded software? Update: I like The Unarchiver, but vote up your favourite, or add it as an answer if it isn’t there.
32
votes
2answers
21k views

How secure are password-protected zip files?

In modern zip utilities like 7zip, you can specify a password when creating a .ZIP file. But, how secure is this? What encryption algorithm(s) are used to secure password-protected zip files?
24
votes
13answers
16k views

What medium should be used for long term, high volume, data storage (archival)?

This question was inspired by http://superuser.com/questions/374386/how-to-store-and-preserve-lots-of-data. There have been other similar questions, but none with the same criteria. This is two ...
24
votes
6answers
3k views

How can I evaluate the best choice of archive format for compressing files?

In general, I've observed the following: Linux-y files or tools use bzip2 or gzip for distributing archives Windows-y files or tools use ZIP for distributing archives Many people use 7-Zip for ...
21
votes
4answers
3k views

Can Double Zipping Cause Problems?

I have a directory that I have been storing a ton of files in. Among the 10ish types of files there are also .zips of other directories. In my personal experience I vaguely remember issues when ...
20
votes
6answers
21k views

tar – extract discarding directory structure

unzip has a nifty option -j, whereby the directory structure of the archive is discarded, and all files are extracted into the same directory. Is there a way of making tar work in the same way? ...
19
votes
11answers
80k views

How can I scan multiple pages into a single PDF?

How could I scan multiple pages into a single PDF on the Mac? This is for document archival (mostly invoices and receipts). Ideally, the results should be somewhat searchable (but manually giving it ...
17
votes
4answers
12k views

TAR vs CPIO, what is the difference?

I am curious and did a bit of reading but still have questions. What makes CPIO different than TAR? I was told in another question that tar is for pulling together many files into 1 archive which ...
13
votes
4answers
1k views

Saving a website permanently [closed]

I am being falsely accused of "item not as described" following an eBay sale and the buyer opened a case against me. eBay's terms with 'buyers protection' force the seller to refund the buyer. I am ...
13
votes
2answers
6k views

How does file compression work?

So, I realised today I take file compression for granted. The ability to bundle a few files together into one, and have it come out smaller than any of them, is something I just accept as a fact, but ...
12
votes
1answer
245 views

Three formats? Why?

I needed to download the Ruby Source recently from here and it says, "available in three formats" which are .tar.bz2, .tar.gz and .zip. Is there any reason that we need all three formats? At least on ...
12
votes
2answers
637 views

Compressing many similar big files

I have hundreds of similar big files (30 megabyte each) which I want to compress. Every pair of files have 99% of same data (less then 1% difference), so I expect to have not more than 40-50 megabyte ...
11
votes
5answers
3k views

Map “untar” to tar xvfz?

How can I map 'untar' as a command to 'tar -xvfz' ? Sorry, but I almost always forget the arguments necessary to 'tar' for this operation.
11
votes
3answers
35k views

How to set password on already existing winrar archive and encrypt it also?

Not when creating new archive, but on existing archive. I would also like to know how to do that in other archiver.
10
votes
8answers
40k views

How do I reassemble a zip file that has been emailed in multiple parts?

I received 3 emails each containing part of a zip file. The extensions end in .z00, .z01 and .z02. (Emailed as such to get around the typical 10Mb attachment limit per email.) I have put all 3 files ...
10
votes
2answers
1k views

Long-term storage reliability of various media

I’m looking for a reference of statistics on long-term storage/archive reliability for various types of media. That is, I’m looking for information, comparisons, charts, graphs, test results, etc. on ...
10
votes
2answers
62k views

How to crack a password protected zip file

I recently downloaded a piece of software that came in a .ZIP archive, but the .EXE software inside of the archive had a password on it. The website that I would have gotten the password from closed ...
9
votes
4answers
9k views

How long will a Solid-State-Drive (SSD) keep its data while not in use? [closed]

Here's my usecase: once-and-only-once copy off photos/videos to an internal SATA Solid State Drive (SSD) put this drive in a well-ventilated, air-conditioned bank "safety deposit box" for safe ...
9
votes
4answers
15k views

Best Secure Encryption for Zip Files via Linux

I want to use highly secure encryption for zipped files via Linux/Ubuntu using a command line terminal, what is the best command line tool to get this job done? zip -e -P PASSWORD file1 file2 file3 ...
8
votes
5answers
26k views

How do I password protect a .tgz file with tar in Unix?

I'm using the Unix tar command as follows to tar up a directory and its files: tar cvzf fileToTar.tgz directoryToTar Is there a way to password protect the .tgz file? I've created ...
8
votes
3answers
32k views

Howto unzip “.xz” file with 7z and lzma

I tried to uncompressed a "*.xz" file with both 7z and lzma. But they gave me such message: $ 7z x myfile.fq.xz 7-Zip 4.57 Copyright (c) 1999-2007 Igor Pavlov 2007-12-06 p7zip Version 4.57 ...
8
votes
3answers
266 views

Video encoding for archival

I would like to archive some home videos (DV). I don't need to save them losslessly, but I would like to encode them in something high-quality. What format is both pretty indistinguishable from the ...
8
votes
2answers
44k views

How to open a EAR/WAR file in windows 7

I have a few EAR/WAR files which are Java archives and I would like Windows 7 to open these files the way it opens a file with extension zip. So I open this war file and in the list of softwares ...
8
votes
4answers
3k views

In place extract tar archive

I have a little dilemma here... I needed to move about 70 GB worth of files from one of my servers to the other, so I decided that tarring them up and sending the archive would be the fastest way. ...
8
votes
3answers
6k views

Universal command line unarchiving tool on a Mac

Is there some command line tool which allows extracting files from most known archive types? Something like StuffIt Expander, but without gui.
8
votes
2answers
6k views

How to download a website from the archive.org Wayback Machine?

I want to get all the files for a given website at archive.org. Reasons might include: the original author did not archived his own website and it is now offline, I want to make a public cache from ...
8
votes
3answers
1k views

Creating an OS X PKG file on Linux?

I have Debian / Ubuntu / Xubuntu. I'm trying to distribute and run a Python file with the least number of clicks for the end user. How do I create a PKG file for Mac OS X on Linux?
7
votes
5answers
4k views

Whatever happened to compressed read/write filesystems?

Back in the 90s, my home computer was an Acorn Archimedes. It had on it a piece of software called ArcFS, which allowed you to create compressed archives, a bit like zip files. Unlike zip files, they ...
7
votes
8answers
19k views

Extract large zip file (50 GB) on Mac OS X

I was trying to move the files to another hard drive. So I archived all my photos in one large ZIP file using the Mac OS X built-in compress function. But the file failed to extract. I've tried ...
7
votes
3answers
19k views

How do I create separate zip files for each selected file/directory in 7zip?

This is the internal zip packer from Total Commander: However I want to use my 7zip packer. When I select 5 files, I get 5 separate .zip archives for each selected file. How do I do that in 7zip?
7
votes
4answers
649 views

Tar and gzip together, but the other way round?

Gzipping a tar file as whole is drop dead easy and even implemented as option inside tar. So far, so good. However, from an archiver's point of view, it would be better to tar the gzipped single ...
7
votes
2answers
4k views

Analyzing properties of a ZIP file

I have a ZIP file, and I want to determine how it was compressed (the specific algorithm, properties used to apply that algorithm, etc.). What software can do this for me?
7
votes
3answers
750 views

Which archive file formats provide recovery protection against file corruption?

I use my external HDD to back up my files, by putting them into large archive files. I have thousands of tiny files, and put them into archives of 500MB to 4.2GB in size, before sending them to the ...
7
votes
2answers
1k views

Linux: Specifying top level-directory when creating zip archive

I have project with the usual directory structure (src/, bin/, ...), i.e project-name/ |-- bin |-- lib |-- src `-- Makefile And would like to create an archive with the following directory ...
7
votes
5answers
1k views

Whats a tag based file organizer? [closed]

I'm finishing professional school and over the years have acquired a pile of notes and articles that I'd like to hang onto. I'd like to add to them and create sort of an archive of article and files ...
6
votes
3answers
516 views

How to remove all the parts of a split RAR archive file using command line?

I’m generally use a Debian based Linux distribution of some sort; either Debian 7.8 or Linux Mint 17. I have a split RAR file like this: filename.rar filename.r01 filename.r02 filename.r03 etc ... ...
6
votes
2answers
9k views

Extract a certain file from an archive with 7-Zip from the command line

If I have an archive, for example, some.zip that contains one or more files, how can I extract only one file (I know the name of the file) with 7-Zip from the command line in Windows?
6
votes
2answers
6k views

7 zip extract recursively

I have several folders, and within each folder, there are zip files. I want to run a command line order to recursively go through every folder and extract in place every archived file that it finds, ...
6
votes
5answers
3k views

How can I archive a 30 GB file?

I have a 30 GB zip file containing an archive of digital materials available in the school library that I want to burn to DVD. Of course, 30 Gb is far too large for a single DVD and the content is ...
6
votes
3answers
9k views

Create multi volume archive on a Mac

I've got a 6 GB file, which needs to be copied to an USB-drive. The drive is 16 GB, but formatted in FAT so windows computers and Macs can read it. Fat limits the file size to 4 GB, so I cannot copy ...
6
votes
8answers
5k views

Winrar-like archive utility for OS X

I've been a Mac user for about 1.5 years and so far enjoyed the experience. But one thing I miss from other operating systems is the lack of compression/decompression utilities that follow the ...
6
votes
3answers
6k views

Password-protected file in Mac OSX

How do I store multiple files in an archive (like .zip/.rar) with password-protection on Mac OSX? It has to be a portable file to keep on Dropbox or a USB-key. Also, the password-protection must be ...
6
votes
6answers
2k views

How to split a zip file across INDEPENDENT volumes

I have about 12 GB of image tiles made up of about 2 million files. I'd like to zip these up to make transferring them to a server simpler. I just plan on storing the files in the zip files for ...
5
votes
3answers
314 views

Unix/Linux program that can handle all popular compression/archiving formats (e.g.tar, gzip, bzip2, zip)?

I sometimes get confused by the varying command line options I need to run common Unix archiving and compression software (e.g. gzip, bzip2, zip, tar). Is there a program out there that can just Do ...
5
votes
3answers
13k views

How do I enable multi-threaded LZMA2 using 7-zip 9.20 on the command line?

How do I enable multi-threaded LZMA2 using 7-zip 9.20 on the command line? I know this is normally done with the -t option like so: "-tzip" . How do I do this with LZMA2? I tried -tlzma and ...
5
votes
4answers
413 views

Best Floppy Drive for reading old floppies

I have a stack of about 30 floppy disks (3.5" type) that have some old childhood memories on them. However, I'm putting them into my random "cheapo" USB floppy drive and every single one is coming ...
5
votes
3answers
122 views

Unarchive file while reducing size of archive?

The dilemma: I have a 10GB archive and a 20GB harddrive. When I go to unzip / unarchive the file the harddrive fills up and the process fails. Question: On ubuntu server 12.04 / linux is there a way ...
5
votes
2answers
3k views

Specify root dir inside tarball

Is there a way to execute tar cjvf foo.tar.bz2 project-root Such that when the tarball is extracted, it doesn't extract to project-root, but instead extracts to something else? i.e. tar xjvf ...