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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Compress folders older than x days

In /opt/abc I have a path where a new folder gets created daily. In that folder a series of files gets created. I would like to run a script every Sunday at 02:00 and compress each folder which is ...
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3answers
108 views

can't compress whole file with tar?

I'm not an expert with tar (xz) but I have a video (FLV) and it's size 95MB I would like to compress it and I was using this command XZ_OPT=-9 tar -Jcvf myfile.tar.xz 1.flv (I got this from a ...
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2answers
116 views

How can I compress multiple pairs of files into separate archives by name?

I've got a couple dozen sets of Audacity project folders and .aup project files whose names are very close, i.e. 10-13-14-data and 10-13-14.aup. I'd like to compress all of these files automatically ...
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2answers
159 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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2answers
1k 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 ...
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1answer
52 views

ntfs-3g Failed to decompress file

For years the logs of my Ubuntu systems sharing drives with a Windows installation have been routinely flooding logs with: Mar 17 11:00:50 kemosabi ntfs-3g[483]: ntfs_attr_pread error reading ...
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1answer
68 views

Cannot open AR archive file!

I have compressed couple of files and folders (mostly photos) using 'Archive Manager' on Ubuntu 14.04. During compression I've selected file type as AR from the drop-down selector. Now when I'm ...
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1answer
88 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
24 views

Linux: compressing pdf with GS is very slow?

I am compressing large PDF files (+10 MB in size) with GS using the following snippet: gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH ...
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1answer
44 views

Can't unzip compressed files - Ubuntu 15.04

So, here's what I'm faced with atm: I am unable to unzip any type of compressed files - 7z, tar, bz, zip, rar, etc. I've tried in front-ends (nautilus and PCMan) and terminal (unzip, tar, etc) and ...
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1answer
132 views

Mounted btrfs will [not] compress?

I have a partition formated to btrfs and im willing to store there stuff that I don't use that often but which I need fast access from time to time (some dumps of my PS2 games for now) because I have ...
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1answer
1k 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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0answers
102 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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0answers
678 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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0answers
67 views

How to uncompress vmlinuz

I have extracted a 14.04 iso file. How would I decompress vmlinuz and then compress it back?
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0answers
71 views

How to reduce file size in swf files?

I'm trying to reduce the file size in a swf file that is 17 MB in Ubuntu 14.10. I tried using swftools and avconv. When I did swfcombine -dz file.swf -o file_new.swf swftools only managed to ...
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0answers
18 views

Installing deprecated tool pack

I'd like to install the pack tool to solely employ Huffman coding to a file, for academic purposes. It is suggested to install liballegro4.2-dev, but I doubt it provides the same tool. Looking for ...
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0answers
134 views

CRC error when trying to open archive with gzip/tar

When I run the command tar xvf ns-allinone-2.28.tar.gz it gives the following error: ns-allinone-2.28/tclcl-1.16/tkAppInit.cc gzip: stdin: invalid compressed data--crc error tar: Child returned ...