Compression is the process in which a file or folder's size is reduced by using an algorithm to encode the same information using fewer bits.

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How to convert the iso file into rar or zip or tar?

Is there anyway to extract iso or convert that to zip or rar or tar file? actually I have a big iso file on my remote server so I just want a file from it not all of that, unfortunately I have not ...
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1answer
73 views

7z “ultra” settings for zip format

7z "ultra" settings for .7z format are: 7z a -t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on What are the "ultra" settings for .zip format (using 7z)?
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1answer
28 views

7z “is not supported archive” while updating an archive

While updating an archive we are getting this error: $ 7za u -pPasswored -mhe=on -r -m0=lzma -mx=9 -mfb=64 -md=32m '-x!temp' filename.7z /home/software Error: XXXXXXX.7z is not supported archive ...
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0answers
28 views

What can 7zip do that archive manager cannot?

7zip is very popular in the Ubuntu Software Centre. But Ubuntu comes with its own Archive Manager, which appears to support many formats, both compression and decompression. What can 7zip do that ...
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1answer
160 views

btrfs for deduplication and compression at the same time?

I'm thinking about using btrfs functions for both deduplicate and compress my storage... My question is: is it efficient? I mean, does it deduplicate AND compress at the same time efficiently?! I'm ...
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0answers
38 views

snzip via apt-get?

The snzip is a data compressor, based on the Google Snappy library. I've found and installed the library itself via apt-get: sudo apt-get install libsnappy-dev but it doesn't include the command ...
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1answer
32 views

compressed block device

I wanted to experiment with combining bcache and a compressed block device on a hdd and seeing if this will speedup the boot time. Are there any means of compressing a block device at the block level? ...
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5answers
782 views

What is the difference between different “compression” systems?

I've always used TAR and ZIP for compression, but recently I have heard about the *.Z compression algorithm. This brought up a question for me: With all of these compression systems, which one is ...
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2answers
66 views

Command/App to convert video files [duplicate]

Anyone know how to batch convert multiple video files into smaller sizes?
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1answer
54 views

Compressing many folders

I have a directory containing plenty of folders as well as compressed files. I need to compress the folders that are not already so (tar -cvzf ...) but have no experience in sh scripts. Can anyone ...
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0answers
25 views

App is not running after tarball file was expanded [duplicate]

Since the latest Blender is not found in the Ubuntu Software Centre I downloaded it directly from their web site. However, now double-clicking on the Blender app won't do a thing :( I expanded the ...
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0answers
16 views

Encoding and syncing music folder

I need to synchronize my local music folder to an external ftp server. Normally I would something like FreeFileSync, but I need the music files to be encoded before syncing. Are there any options?
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1answer
82 views

How to create a .bz2 file from a directory without using tar?

I've been searching on the internet and used Archiver to make .bz2 files. My archiving tool only makes tar.bz2 and my game host doesn't read that. It reads .bz2 files only. Is there a way to make a ...
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1answer
78 views

Rsync-ing highly compressible files - am I missing something here?

Today I was using rsync over a slow internet connection to transfer a video file - uncompressed avi, 60 seconds duration, 360MB in size. Basically it contained 1500 frames of the same image, hence it ...
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2answers
86 views

How do i backup my videos folder

Is there a way that I can compress my videos folder to a very small size that can fit in an 8 GB USB-drive? The folder is about 32 GB and has all our family videos in it. I tried backing up but the ...
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0answers
35 views

How to routinely back up files on Ubuntu Server 12.XX? [duplicate]

I would like to know how I can setup a automated backup for Ubuntu server to either make a compressed backup of a group of files or upload them to a remote server. I don't need a whole system backup ...
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1answer
51 views

How do I add convert wav into flac to the context menu?

I would like to right click on an wav-audio file in Nautilus or Dolphin and convert it to a FLAC-audio file that way with the highest possible loss less compression.
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1answer
1k views

Missing GUI application for 7-Zip?

I installed 7-Zip from Software Center, but where is the GUI application? Original question asked by a user: ich habe 7Zip aus dem Softwarecentrum installiert, finde aber kein Symbol zum ...
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2answers
37 views

Can you have debs without compression?

I'm in the middle of doing an upgrade on a really slow machine. It's an Intel Atom that's a few years old. It's perfect for watching video and using XBMC but it really honks at decompressing hundreds ...
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1answer
620 views

Make the daily log rotate run on exact time

I have Ubuntu 12.04.2 LTS server. My daily log rotations which are listed under /etc/logrotate.d/ are executed at the morning around 7:00 am, but it is not on exact time, each day it changed on range ...
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2answers
5k views

Compressing folders with password via command line

I would like to know whether it is possible to do the following via CLI. I have a Folder F which contains several sub folders and some files. I want to compress folder F into .zip file with the ...
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3answers
17k views

how to extract tar.7z files from command line? [duplicate]

Is there a way to extract files of tar.7z format using command line tools in Ubuntu?
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1answer
157 views

Screenshot tool with integrated optipng or pngcrush

This is a followup question of how do I get maximal compressed screenshots? Is there a screenshot tool that has optipng or pngcrush already included to minimize the filesizes of the png ...
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1answer
452 views

How do I add archive folder to dolphin in Xubuntu?

When I right-click on a folder in dolphin there is no option to compress that folder. How can I add this to the context-menu of a folder like: create archive from folder --> zip,rar,7z,...
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1answer
1k views

Xfce - GUI for File Compression?

If I remember correctly, using Nautilus in Gnome, I could simply right-click on a file & select "compress". Now I am using Thunar in Xfce & I can't find how to simply compress files... I ...
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2answers
65 views

Compression or Decompression

My question is that if I have two files suppose : file_1.gz and file_2.gz then can I compress these to files into another compressed file ex file_1+2.gz (Just a name.) The catch is that I dont ...
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1answer
56 views

Best container/compressor for nesting

Is there a format, such as 7zip, zip, tar.gz etc that that 'glues' pre-compressed folders together quickly? At the moment, it appears that archiving pre-compressed files/folders has very little ...
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3answers
161 views

Which archive format does not read/extract whole archive when extracting single file?

As the title states, I have a few large archives (currently in .7z and .tar.gz format) stored on a remote location which I access via sshfs. I often find myself needing to extract one or two files ...
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1answer
721 views

Unrar fails when accents are present in filenames

I have the rar package installed. Double clicking on .rar files opens the file in Archive manager. It works fine when folders or files use only characters with no accentuation, but if there is some ...
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2answers
4k views

How do I create tar.7z file from the command line?

I would like to zip up my homework from last year. How do I tar and zip the whole folder from command line Ubuntu (I don't have GUI).
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2answers
225 views

how do I get maximal compressed screenshots?

I'd like to compress my screenshots as much as possible before I send them via email. The best compression ratio I only got with some work on each screenshot: first I took the screenshot with ...
2
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1answer
528 views

Extract an .mzp on Ubuntu

As above, is there any way to perform an extraction of a .mzp file on Ubuntu? The interwebs have nothing for me :p.
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0answers
465 views

Unrar works really slow compared to Winrar?

Is there a particular reason why Unrar operations are so slow comparing to Winrar on Windows. I managed to extract a file faster in Virtualbox (Windows 7 guest with Winrar).
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1answer
3k views

Gzip and rename (remove .gz extension) all files except images and PDFs?

I am able to gzip every file in a directory (mydirectory) using the command: gzip --suffix .gz --recursive mydirectory But... I don't want the images (.ico, .jpg, .png, .gif) and PDFs (.pdf) ...
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4answers
3k views

Why are the .zip files of compressed .jpegs about the same size?

I am a new user of Linux OS's and I am trying Ubuntu 12.10 right in this days. The overall impression is quite positive, but there are some features that make it still complicated for use from most ...
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2answers
1k views

Should I install zip or use gzip?

I have downloaded some .zip files. I wish to decompress them (I have unzip), modify them, and compress them again (into separate compressed files, one decompressed file per compressed file). I have no ...
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5answers
5k views

Multi-Core Compression tools

What compression tools are available in Ubuntu that can benefit from a multi-core CPU.
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1answer
2k views

How to read/mount a .gz.dd image file?

I have a partition file (a .gz.dd file) that I need to read the files from. I'm new to Linux and I don't know how I can read/mount .dd files in Ubuntu. Would you guys tell me the procedure of reading ...
2
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1answer
3k views

Simple Scan - Changing the default output File Type to PDF and improving Compression?

Is there a way to change the default output file type in the 'Simple Scan' software provided with Ubuntu 12.10 to be a PDF rather than a JPEG? And is it possible to modify the compression settings on ...
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3answers
7k views

How to install rar (no installation candidate)?

I need the package rar. But I get this error whenever I try to install it: Reading package Lists... Done Building dependency tree Reading state information... Done Package rar ist not available, but ...
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2answers
7k views

Best compression method?

I want to compress a 16GB folder, but what's the best method? tar.gz? tar.bz2 rar? 7z? Would the archive be smaller if I first compressed in a method, then copy the compressed archive to a new folder, ...
0
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1answer
281 views

Reduce PDF file by factor of two [duplicate]

Possible Duplicate: Reduce filesize of a scanned PDF How to reduce pdf filesize? I have completed my thesis. I used LaTeX to write and the total output size of my PDF is ~100MB. It ...
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2answers
4k views

Reducing a scanned pdf file size [duplicate]

I need to compress a scanned PDF file from 1.5 MB to under 600 KB. I've tried a number of Ghostscript solutions given on other threads but they seem to compress it all the way down to just 2.2 KB and ...
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2answers
354 views

How can I set up on-the-fly/transparent compression?

I have huge data sets to deal with, and so my 1TB drive is filling up quickly. However, the data is highly compressible when using LZMA (7zip, bzip2). The only file system with transparent compression ...
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3answers
3k views

Any linux command to perform parallel decompression of tar.bz2 file?

I have a rather large file (~50GB) and it takes some time to run tar xvf file.tar.bz2 on it. I'm aware of programs that can do parallel compression for bzip2 files but unaware of programs that can ...
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2answers
365 views

How to decompress and access a 10 year old ACE file?

I'm trying to unarchive some old photos I have that are stored in ACE format (via WinACE). The file was created a little over 10 years ago. I'm running unace l photos.ace and getting what seems to be ...
3
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2answers
1k views

Which Compression Format will give the least size

Hi i have a few GBs of files which i am supposed to burn to a DVD for permanent storage, which compression format will give me "LEAST" size, thanks
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1answer
1k views

Is it possible to run `Extract here` or `Compress`/`Create archive`with other archivers than the three listed (in PCManFM)?

I have installed 7pzip and peazip to handle archives but after setting one of them as default and using Extract here or Compress/Create archive I am prompted as below Selecting one in the list ...
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3answers
2k views

How can I compress an mp3 file?

Well that is my question! i used to download a program in windows that used lame to compress audio of mp3 files and made them shorter in size but I don't know how to do this in ubuntu! Does anybody ...
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1answer
669 views

compressing a list of files by using tar

what I am trying to do is to compress a list of files using tar. So what I am doing is sudo tar -pcf filename.tgz `cat filename.list` so if there is a directory on the list like this ...