Gzip is any of several software applications used for file compression and decompression. The term usually refers to the GNU Project's implementation, "gzip" standing for GNU zip. It is based on the DEFLATE algorithm, which is a combination of Lempel-Ziv (LZ77) and Huffman coding.

learn more… | top users | synonyms

-1
votes
1answer
908 views

Grade F on Compress but gzip is running

i got a litte problem with gzip YSlow says: Grade F on Compress components with gzip There are 5 plain text components that should be sent compressed Page Speed says: Enable ...
3
votes
1answer
3k views

Config NGINX to GZip Font Files? ( Different gzip_types for different directories)

SOLUTION: It turns out it is not my config / NGINX faults - my DNS provider, cloudflare, is preventing the fonts from being GZipped for some reason I'm using NGINX with GZIP_Static module installed. ...
1
vote
1answer
1k views

Oops - how to undo gzip of entire web directory? [closed]

So.. yeah. I don't spend a lot of time on the linux command line and instead of making a zip file of the web directory, I gzipped everything in the web directory. What's the anecdote to stupidly ...
1
vote
1answer
547 views

Why does tar -c dir | pigz > /mnt/nfs/dir.tgz use network, then cpu in cycles instead of both at once (with one bottlenecking)

I want to transfer a multi-terabyte directory to an nfs mounted directory most efficiently over a 1Gbit network (probably the limiting factor) 3 options - tar and compress in place, then copy copy, ...
0
votes
1answer
158 views

Repeated unsuccessful gzip compression of my website's files

The site in question is goinnativerecords.com I've got a basic shared hosting account and my website is a little heavy on the javascript so I decided to compress with gzip. Contacted my hosting, ...
5
votes
3answers
11k views

How to use GZip to create a .zip file

Is it possible to use GZip to create a .zip file? I've been Googling and can't find anything that leads me to believe this is possible
1
vote
2answers
497 views

`mod_deflate` is returning `Content-Encoding: gzip`. Is that normal?

mod_deflate is configured on my Apache 2.2 web server. But my response headers are showing gzip as the Content-Encoding instead of deflate: HTTP/1.1 200 OK Date: Mon, 26 Sep 2011 22:26:11 GMT Server:...
2
votes
2answers
107 views

Should I serve compressed PDFs?

I'd like to know if there's a general rule of thumb wheter to enable gzipping for PDF files or not. I use NGINX but I think this would be helpful for Apache users as well. Thanks.
0
votes
2answers
444 views

CRC Failed, File is broken, using php system command to tar a directory

Can anybody see a problem with the below PHP code? Or have any ideas to troubleshoot a solution as to why whenever I download the backup file.tar.gz and try to open it using 7zip on windows... that I ...
1
vote
2answers
356 views

What reasons (if any) are there to *not* enable gzip compression for your web server?

Specifically I am working with IIS7, in case there are platform specific reasons, but I am curious in general. I know gzip compression is more CPU intensive for both the server and the client, but it ...
1
vote
1answer
1k views

Turn off gzip compression for one virtual host

I'm running into a problem where I think PHP deprecation errors are causing the headers to be malformed, causing a 330 error. If I disable error reporting for E_DEPRECATION, the error disappears, so I'...
1
vote
3answers
2k views

PHP content-length header not specifying size for my forced download

I am trying to allow our users to be able to download a zip file using a php force download. I was having trouble getting the download to finish and it turned out the zip file was getting gzipped and ...
0
votes
3answers
142 views

Uncompressing gzip file

I have compressed a folder using following command: tar czvf arch.tar.gz dirname/ When I try to uncompress it using following command tar xvfz arch.tar.gz then it uncompress folder but contents ...
7
votes
1answer
536 views

Apache deflates .xml.gz files

I noticed an error in google webmaster tools regarding a gzipped version of a sitemap. Turns out the sitemap.xml.gz file is gzipped twice: one upon creation (as it should be) and another time when ...
2
votes
2answers
13k views

gunzip: invalid compressed data--format violated

Problem definition: I transferred a tar.gz file from a Linux machine to a Windows partition.The Windows partition has mounted with the Linux server as cifs. OS : Red Hat Enterprise Linux Server ...
6
votes
1answer
11k views

How can I enable GZIP compression in Jetty?

I have a Jetty server which does not have compression enabled (I tested this here). How can I enable compression?
-1
votes
1answer
3k views

Unable to decompress a .gz file on centos. gunzip: filename.tar.gz: not in gzip format

I am trying to install the latest apache ant to centos. I did as follows: wget http://ant.apache.org/bindownload.cgi/apache-ant-1.8.2-bin.tar.gz gzip -d apache-ant-1.8.2-bin.tar.gz and I get the ...
1
vote
2answers
107 views

Is it possible to store MySQL data as comressed?

Is it possible to store MySQL data compressed? Option for that in MySQL?
1
vote
1answer
2k views

Gzip Compression IIS7 with Proxy Not working

I have seen posts with GZIP compression not working on IIS7, but none seemed to help in my case. I have a proxy server that sends the request to my website on IIS7. I have the following in web.config ...
22
votes
2answers
16k views

Fastest way to extract tar.gz

Is there anyway to extract a tar.gz file faster than tar -zxvf filenamehere? We have large files, and trying to optimize the operation.
3
votes
2answers
444 views

Erratic gzip compression on IIS7.5

This is best demonstrated when we just try to request a single CSS file from our IIS server. Sometimes we get the whole uncompressed file back. We'll wait 5 seconds and refresh, then the CSS file is ...
0
votes
1answer
665 views

gzip, deflate are not showing while accessing from a proxy

We enabled gzip and deflate in our local server and it shows correctly in phpinfo like shown below HTTP_ACCEPT_ENCODING gzip,deflate,sdch We installed the same in our client's server and there was ...
13
votes
5answers
4k views

Grepping through .gz log files

Does there exist a magical shell piping which would allow easily to grep through bunch of .gz log files without needing to extract them somewhere? .gz files are Apache logs, result of log rotation. I'...
3
votes
2answers
3k views

How can I disable gzip in apache on Ubuntu 10.10?

I'm trying to figure out how to disable or uninstall gzip from my Ubuntu server. This is to support a package of buggy software that breaks when it's trying to do a crazy call to a css file (don't ...
0
votes
2answers
610 views

IIS6 wont compress js and css

So recently I configured IIS6 to compress files I now have most files compressing apart from my JavaScript and CSS files. Does anyone have an idea what maybe causing them not to be compressed. I know ...
1
vote
1answer
140 views

gzipped tar archive file paths

I am creating a tar.gz file containing some files and folders as follows: /bin/tar cfz /usr/local/backups/mybackup-${DATENAME}.tar.gz /usr/local/backups/db-${DATENAME}.sql.gz ...
0
votes
3answers
230 views

When I extract .tar.gz all of the files within the folders have the .gz suffix

I have recently begun using a VPS and am learning linux along the way. I have compressed a folder using tar, then I gzipped it and used scp to send it to my server. When I decompress using tar -zxvf ....
2
votes
4answers
8k views

how to copy & gzip files individually over ssh

I'd like to transfer a directory with uncompressed files over using ssh, gzip'ing them individually along the way. Can anyone recommend a simple oneliner to achieve this? eg. fileA.ext -> ssh/pipe ->...
22
votes
4answers
21k views

What is the best nginx compression gzip level?

I'm using nginx reverse proxy cache with gzip enabled. However, I got some problems from Android applications HTTP-requests to my Rails JSON web service. It seems when I turn off reverse proxy cache, ...
4
votes
4answers
5k views

How to manually extract a backup set made by duplicity?

I have a set of files on my webserver produced by duplicity software: duplicity-full.20110315T085334Z.vol1.difftar.gz duplicity-full.20110315T085334Z.vol2.difftar.gz duplicity-full.20110315T085334Z....
1
vote
1answer
525 views

making apache serve unzipped content from zipped files

I need to serve a bunch of gzipped MIDI files from an Apache server. The catch is that when the user requests them, the response should come back with a "audio/midi" content-type header and not a gzip ...
0
votes
3answers
976 views

gzip compression good or bad?

I have a server that currently does a lot of processing in my application and the target users are those who have a very good internet connection. The output that is sent from the server is always ...
4
votes
1answer
2k views

How do I server pre-gzipped files with nginx so that they'll be shown as text in the browser?

I have a bunch of gzipped log files I'd like to serve with nginx. I want them to served in such a way that they're automatically inflated by the browser. I assume that means I need nginx to send the ...
6
votes
0answers
8k views

How to use IIS URL Rewrite with gzip compression

I've been trying to create outbound rules in IIS 7.5 on Windows 2008 R2 on a site that has static HTML pages and compression enabled. If I have any form of compression enabled (static or dynamic) I ...
0
votes
3answers
887 views

How to pre gzip static JS

my site is running IPB 3.1.4 and I want to pre-compress my .js files. I have ssh root access and need the command to gzip the js directory and the code for htaccess. My htaccess: Options -Indexes &...
2
votes
1answer
748 views

Apache inflate application/ with mod_filter

I need to prevent pdf objects from being gzipped. Really, this only needs to take place if the request is from the Mozilla browser (but since I can't get something as seemingly simple as no-gzip for ...
0
votes
2answers
4k views

I am trying gzip compression for my javascripts and css file but for css it is not working

I am trying gzip compression for my js and css files. but for css it is not working. also when i do page speed analysis using firefox page speed it asks to enable gzip compression on your server. it ...
2
votes
3answers
4k views

Attempted gzip of directory applied gzip to each file individually

I tried to gzip a directory with the following command: gzip -r /home/path/to/backups/mydirectory.gz /home/site/public_html/ I was expecting to see a .gz file show up inside ...backups containing ...
2
votes
2answers
182 views

Backup file format that enables easy access of specific files?

I need to upgrade a Server and there have to make a compressed backup of a lot of directories. The question is: Which format should I use? tar.gz, cpio? Both compression and decompression processes ...
0
votes
2answers
1k views

How to disable chunking in apache?

When using mod_deflate in Apache2, Apache will chunk gzipped content, setting the Transfer-encoding: chunked header. Is there any setting that would change Apache's default behavior, and have Apache ...
1
vote
1answer
633 views

How to get Apache (on Debian squeeze) to compress JS/CSS

I am running Debian squeeze and cannot get Apache to compress JavaScript or CSS. HTML, however, is being compressed. In the conf files in the sites-enabled dir, I've got the following: <Location /&...
0
votes
2answers
220 views

Apache isn't deflating my website home page

I have the following 3 rules at /.htaccess AddOutputFilterByType DEFLATE text/html text/plain text/css application/json AddOutputFilterByType DEFLATE text/javascript application/javascript ...
5
votes
3answers
5k views

How to list content from a tar file without recursion?

I've a tar (gz, bzip) file and want to see its content, but not recursively. This is: The "first level" in the file. I already know how to see content: tar -ztf file.tar.gz But it's recursive!! ...
0
votes
3answers
157 views

Ran Gzip command and broke my site, need help with reverse command

In trying to back up a website on an apache server this am I ran the following: gzip -r /var/www/httpd/vhosts/mysite.com/ mysite.gzip Trying to backup the path to the gzip file. Howvever, after ...
2
votes
2answers
250 views

is gunzip atomic?

I have two scripts that watch a directory (postgres warm-standby) one script copies compressed files into the directory and then uncompresses them. the other script watches for the uncompressed ...
2
votes
5answers
2k views

Backup MySQL database and gzip

I'm trying to get a little more usefulness out of my MySQL backups. I'm wanting to gzip my backup when it's completed from a cron job. Here's the script I have so far to do the backup. #!/bin/sh ...
1
vote
1answer
920 views

Gzip pre-compression

I'm using mod_deflate to compress my .css and .js files on the fly: <ifmodule mod_deflate.c> AddOutputFilterByType DEFLATE text/text text/html text/plain text/xml text/css application/x-...
0
votes
1answer
2k views

Apache mod_deflate enable?

I'm using the follow code in .htaccess. It works nicely in localhost, however in production server i'm having troubles with gzip compression. AddOutputFilterByType DEFLATE text/css text/html ...
2
votes
1answer
624 views

IIS7 is gzipping files but not serving the gzipped version

By following a number of helpful blog posts I have configured IIS to gzip my static files. I have even enabled Failed Request Tracing and filtered to the 200 status code, and I can see the successful ...
10
votes
3answers
19k views

Content-Length not sent when gzip compression enabled in Apache?

I would really appreciate some help understanding this Apache behaviour. I am communicating to PHP from an iPhone Objective-C app in application/json. Gzip compression is enabled on the server, and ...