`gzip` (or GNU zip) is a file format and corresponding utility for compressing files using the DEFLATE algorithm. The usual extension is `.gz`.

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One-click to create and extract .tar.gz files in Windows?

I'm using 7-zip latest alpha version (9.30) and I find it really inconvenient that, if I want to create a .tar.gz archive, I have to create a .tar archive first then add it to a .gz archive later. So ...
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3k views

Shell Script to GZIP files without overwrite .gz files

I'm trying to create a shell script which receive as first parameter of a path to a folder which I would like to compress all files using gzip without overwrite the .gz files that already exist in ...
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167 views

gzip many files one by one

I have 100 files, n1.txt, n2.txt,… and I want to gzip each of them, but not in one file – finally I'd like to have 100 n*.txt.gz files. How can I do that in Linux with Bash?
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911 views

zcat or gunzip: proceed on error

When trying to gunzip or zcat a large number of gzip files, zcat/gunzip will terminate with this error: gzip: <gzip-file>: unexpected end of file Is there any way I can get gunzip or zcat to ...
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When using “gzip --decompress”, the result is “gzip: MYFILE.zip: unknown suffix — ignored” on Windows

In Windows PowerShell (if it matters), I would like to decompress a zip file with gzip with the argument --decompress, but unfortunately it doesn't work. Please look at the screenshot below. gzip ...
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2answers
7k views

What command to use to unpack a .tar.gz file in Windows?

I use to receive tar.gz files fromm colleagues but unpacking them with 7zip is not convenient as it unpacks a tar file from gz first while I usually seek to get the tar file contents (so I have to ...
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2answers
2k views

Find out the size of a .tar.gz archive in the terminal without unpacking

I have a 32GB .tar.gz archive and I'd like to know the size of the files if I unpack this compressed archive. I'd like to avoid unpacking the archive first and than use e.g. du. Is it also possible ...
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1answer
189 views

UNIX shell command to expand files of any compressed type

Is there any UNIX shell command to expand a compressed file which type is not known in advance? I should be able to use this command to expand at least any of the following types of files, though the ...
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1answer
796 views

pfSense iso.gz doesn't seem to be a compressed iso image

I downloaded the latest pfSense ISO (pfSense-2.0.1-RELEASE-i386.iso.gz) and had 7zip extract it, but it just shows me the disk contents. I cannot extract the actual ISO file to burn it with the boot ...
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1answer
451 views

Compressing bigger than 1GB files seems not to work

I tried my best to compress some videos, about 1.4GB each. I tried to compress them separately, "tarring" (using tar) them and then compress, everything. I'm on OS X Lion and I did try the ...
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4answers
17k views

How to obtain maximum compression with .tar.gz? [duplicate]

The way i understand the use of tar + gzip is that tar is normally used to consolidate a grouping of files into a single file, then gzip is used to compress that file. I recently learned that tar can ...
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1answer
349 views

How to zgrep by file pattern and timestamp?

I have a list of several thousand gzip (*.gz) files that I'd like to zgrep through, but I only want to run it on files with a last-modified-timestamp on or after yesterday (11/22/2012) and that ...
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2answers
94 views

Extract a section of a tgz file

I have a 28.5 GB .tgz file which was created on the command line of a Linux computer, compressing one folder and all its many many subfolders. I now want to extract a single sub-sub folder from that ...
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2answers
1k views

Estimate compressed file size in tar.gz

I've got a set of .tar.gz files, which are duplicity backup files (either full backups or incremental ones). I'd like to compute which directories take the most space on backups. This will most ...
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3answers
3k views

Is there a command to determine the compression ratio of a tar.bz2 file?

I have a file.tar.bz2 that's about 50GB and would like to extract it however I don't know how much space I will need. Is there a command to print the compression ratio of the tar.bz2 file?
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1answer
282 views

Enabling GZIP compression for Firefox RSS reader

I'm trying to view an RSS feed in Firefox, but am getting the following message. Your RSS reader does not support (gzip) compression. Is it possible to enable GZIP compression in the Firefox RSS ...
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1answer
1k views

General Compressibility Of Various File Formats [closed]

Has anyone come across list of which file formats generally compress well (in general algorithms)? Generally, text files .txt compress well, and media-files (.mp3, .avi, etc) do not compress well. ...
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2k views

Why doesn't Gzip compression eliminate duplicate chunks of data?

I just did a little experiment where I created a tar archive with duplicate files to see if it would be compressed, to my awe, it was not! Details follow (results indented for reading pleasure): $ dd ...
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0answers
260 views

Is it possible to recover partial compressed files?

Of the most popular compression methods (7z, RAR, Zip, GZip) is there any of them that allows to retrieve the uncompressed data from a partial file? Imagine there is only one compressed file, and it ...
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1answer
173 views

Looking for a gtk equivalent of ark

Does there exist a GTK equivalent (or improvement) of the Linux archiving tool known as Ark? If so, where might it be found; and if not, how well-received might be a new project which acts as a ...
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1answer
1k views

Zip/gzip compression ratio much less in Linux than in Windows

I have a bunch of very huge files located on a Linux machine that I would like to compress and save some space. I have tried using the tar/gzip combination and I have noticed that the compression ...
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2answers
400 views

How do I compress a directory?

Hey guys I was wondering how would I gzip 7z tar or just regular zip a directory like this /var/Backups/Tones regular gzip won't do it because Tones is a directory and this site ss64.com/bash doesn't ...
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1answer
766 views

Why my multiparted .tar unpacs just partly? (missing files)

I have 25 .tar files like: filename.tar.001 - filename.tar.025 When I want to unpack them with cat myarchive.tar.* | tar xvf - it does, but missing files: whole .tar is 1,2 GB, but unpacked files ...
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1answer
100 views

Guess compressability of a large file

I have a large file (~20 GB) and I want to quickly make an (approximate) estimate of how well it can compress. I want an program which can provide an immediate guess at the compressed filesize, and ...
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How to gzip a directory, transfer via scp, and decompress in one command?

I frequently transfer large directories over scp and it would be sweet if I could somehow compress the directory, send it, and decompress it all in one. Is something like this possible?
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.tar file to excel conversion [closed]

Hi i was requested to convert a file by one of my client.I need to convert a .tar file to a ms excel. I gave the below steps to them but some of the fields in the content are missing. Please suggest ...
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1answer
131 views

Difference between caching & gzip for static pages

I have implemented all caching methods such as, memcache, diskcache, and also tried GZIP. Is there any source I can refer to which explains the difference between them. I tried memcache it is really ...
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5answers
7k views

Fastest GZIP utility

I'm looking for the fastest gzip (or zip) utility. I have a LVM volume which 95% exists out of blank 0's, so compressing that is very easy. I'm looking for the most fastest solution, and don't really ...
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1answer
1k views

How to gzip more than one file using cygwin [duplicate]

Possible Duplicate: How to gzip multiple files into one gz file? I am trying to gzip a bunch of files in the same folder using cgywin on windows 7. When I try gzip *.* I can't seem to ...
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5answers
2k views

Any method to batch-compress multiple files?

Does anyone know how multiple files can be GZIP compressed? I have lots of files in a folder and I need to compress them individually. Actually, I've found a way to do it. GZIP command line binary ...
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2answers
185 views

Modern command line file compression utilities

I am frequently moving large files around from server to server. UNIXes comes with standard gzip and bzip2 compressors. However, what open options there exist beyond these, especially ones utilizing ...
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660 views

Google Chrome Developer Tools data transfer size

In Google Chrome when using the Network Panel to monitor files being transfered from a site, the total size of the data transfered is given at the bottom of the list. Does this figure reflect the size ...
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gzip change file ownership

Here is a case i don't understand i have a group 'bar', and this group has two users; 'foo' and 'bar'. I have a test.txt file, 'foo' is the owner and 'bar' user only can read it. However, if 'bar' ...
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355 views

Weird GZip / Disk space issue

I'm working on a server which is using PCI Compliant partitioning rules, which means that each of the following directories has its own partition: /, /var, /boot, /usr, /tmp and /home. The server is ...
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4k views

Which archiving method is better for compressing text files on Linux?

In my application I need do compress of logs that are text files. Seems that bzip2 and gzip have the same compression ratio. Is that correct?
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1k views

Utility to cat/gunzip a list of files

Is there a commonly-installed Linux utility that will take a list of files and cat or gzip -d (==zcat) them based on whether the file is compressed? An example of where I just needed this is when I ...
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388 views

Did gzip destroy my log file?

I had a rather big log file. So I thought I'd gzip it before transferring it to my pc. I did gzip bla.log which gave me a tiny bla.log.gz When I extract it using gunzip bla.log.gz I get back ...
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479 views

Gnuplotting gzipped files

I would like to use a command like plot 'datafile.gz' u 1:2 in gnuplot for a data file that is gzipped. Of course gnuplot does see that the file is gzipped and unzip it for me. Is there a way to ...
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2answers
827 views

Is it more efficient to rsync uncompressed text data or the same data gzipped?

Rsync only copies over the changed parts of a file. So if I have a large data dump, for example a SQL database in text format, and I want to copy it to my local machine using as little bandwidth as ...
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1answer
2k views

gzip - Extracting without deleting zip file

Right now I am running an extract from a .gz file using the Windows gzip.exe. However when I decompress the file, it kills the .gz file and leaves me with the extract file. For example if I run this ...
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2answers
5k views

How can I compress a large file into smaller parts?

I'm looking for a way to compress a large file (~10GB) into several files that wont exceed 150MB each. Any thoughts?
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2answers
870 views

Excluding Path While Compressing with TAR/GZ

I am compressing list of files like this: tar cvzf mycompress.tar.gz /dir1/dir2/file1.txt /dir1/dir2/file2.txt However when I uncompressed them the directory /dir1/dir2/ is still preserved. How to ...
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Howto pipe: cp | tar | gzip without creating intermediary files?

Can anyone tell me if it's possible to pipe | this without having to create a physical file anywhere between A and B.tar.gz? This is what I'm trying to do: File A Rename A to B Tar B.tar gzip -9 ...
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1answer
552 views

Merge tar files in Windows Server

In my server(windows server) I have 3 tar files. (file.tar, file.tar-2, file.tar-3). I want to merge those files. (Those are generated by some server tool). So I am looking for a tool to merge ...
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GREP and TAR all files/directories matching X

I would like to find and gzip/tarball contents of all the folders matching wordpress in my directory, but I am having trouble trying to get the command to work, I thought it was something like find ...
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1answer
87 views

Which is better: using flags, or pipes?

As with many things in the *nix world, there is more than one way to generate .tar.gz files. Typically, I use the following: tar zcf /path/to/dir.tar.gz /path/to/dir However, I have seen the ...
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How to GZIP all the files or a list of files from some path?

I know that gzip compress a file, but I would want to know. How to compress a list of files, each file in their own GZIP file ? I need to use the list of a folder: ls log.2011 And for each file ...
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346 views

Unzipping a huge file stalls the server

I want to extract a huge .tar.gz file but when I do extract it stalls the server. The server is write heavy and extracting seems to choke the disk. Is there a nice way to extract without stopping the ...
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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 ...
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4answers
53k views

How to specify level of compression when using tar -zcvf?

I gzip directories very often at work. What I normally do is tar -zcvf file.tar.gz /path/to/directory Is there a way to specify the compression level here? I want to use the best compression ...