Zip compression questions
location: ubuntuforums.com - date: January 5, 2015
I recently installed Ubuntu 14.04.1 An online Ubuntu enthusiast/semi-guru recommended to me that I install packages zip and unzip via the command line as follows: sudo apt-get install zip unzip What would be the benefit of installing those two packages? Doesn't Ubuntu already natively have the capability to zip and unzip files? Is there something I don't understand here? Also, did I post this in the proper part of the forum for this type question? I'm new the the forum in the sense that I don't come here much. It's been years since I last came to this forum, and I haven't used Ubuntu in a while. I just returned to Ubuntu after briefly trying Windows 8.1.
ssh over OpenVPN network: compression questions
location: linuxquestions.com - date: March 25, 2013
A doubt ...
When running ssh over an OpenVPN network does it make sense to compress both?
The OpenVPN network carries several types of traffic, not just ssh, so presumably its best to have OpenVPN configured for compression in case the upper level packets are not compressed.
ssh packets' payloads are encrypted so are random so cannot be compressed. Presumably ssh compresses raw data and so reduces the amount of encrypted data to be transmitted. The same reasoning would apply to any encrypted data.
If my understanding is correct, it would follow that both OpenVPN and ssh should be set to compress to minimise the size of what is sent over the wire.
Which is more efficient tar or zip compression? What is the difference between tar and zip?
location: linuxexchange.com - date: January 4, 2012
I'm working in Linux environment and want to know about tar and zip commands.
Which is more efficient - tar or zip? I also need to know the differences between the tar and zip commands. Can anyone explain them to me?
Why doesn't ZIP Compression compress anything?
location: linuxexchange.com - date: August 2, 2012
A 398MB directory was only compressed to 393MB using 7Z and Normal ZIP compression. Is this normal? If so, why do people continue to use ZIP on Windows?
Zip file with no compression
location: linuxquestions.com - date: April 21, 2006
I am attempting to modify some Thunderbird .jar files in Slackware 10.2 and KDE 3.4. I need to modify the .jar files then zip them but with no compression. I have done this in the past using FileRoller in Gnome, but I can't seem to find a setting in Ark to zip files with no compression. I also couldn't figure how to do this with the command line.
How do I modify these files and reinclude them in the .jar with no compression? Does anyone know how to do this with Ark or the command line? How about another KDE application that can do this?
How to Tar/Zip files do a different directory from compression
location: linuxquestions.com - date: July 27, 2013
I need some help with backing up files.
My folder I want to backup is called backup123. The location is /home/Desktop/123/backup123
Instead of backing it up to the folder 123 I want to back it up to the folder /home/Desktop/allbackups
How would I do that.
P.S sorry if you don't undderstand me, my english is not the best.
zip deflated 0% ? Why no compression? [closed]
location: linuxexchange.com - date: November 9, 2012
I'm trying to zip the content of a folder that contains 4 big files, very, very similar.
So I expect the size to be reduced.
Here's the command I'm using on linux/fedora:
zip -9 myarchive.zip -r myfolder -P mypassword
I get the response:
adding: myfolder/ (stored 0%)
adding: myfolder/Program1.exe (deflated 0%)
adding: myfolder/Program2.exe (deflated 0%)
adding: myfolder/Program3.exe (deflated 0%)
adding: myfolder/Program4.exe (deflated 0%)
Then I get the archive, which is approx the same size as my original folder.
It seems that no compression is occuring at all.
Thanks for your help.
How to list the contents of a zip along w/ file sizes and compression ratio via cmd line
location: linuxexchange.com - date: January 1, 1970
How do I list the contents of a zip along w/ file sizes and compression ratio (or packed size) on osx w/ command line tools?
How to determine compression method of a ZIP/RAR file
location: linuxexchange.com - date: July 23, 2012
I have a few zip and rar files that I'm working with, and I'm trying to analyze the properties of how each file was compressed (compression level, compression algorithm (e.g. deflate, LZMA, BZip2), dictionary size, word size, etc.), and I haven't figured out a way to do this yet.
Is there any way to analyze the files to determine these properties, with software or otherwise?
Cheers and thanks!
Issue when using System.IO.Compression and ZIP file with larger than 4Gb files inside
location: linuxexchange.com - date: March 6, 2015
I've just spent few hours struggling to do a very simple task: enumerate zip file contents using C# and System.IO.Compression.
When I have zip files with small files inside, all is good.
When i use a zip file of 1.2gb which has a database file inside 4.8Gb in size i get "Number of entries expected in End Of Central Directory does not correspond to number of entries in Central Directory." I've read and I've read a lot and i cant seem to find a way to work with my archive.
The code is:
string zipPath = @"E:\Path\Filename.zip";
using (ZipArchive archive = ZipFile.OpenRead(zipPath))
foreach (ZipArchiveEntry entry in archive.Entries)
Is there a way, any way, to use System.IO.Compression with large zip file contents? All I want is to enumerate the contents of the archive and I do not want to use any 3rd party bits as I was it was suggested on other places.
Page: 1 2 3 4 5 6 7 8 9 10