`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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How to open tar gz file created using tar piped to gzip

I wanted to generate a tar gz file with the highest compression level, and I followed the solution from http://superuser.com/a/546509/461740: tar cv /path/to/directory | gzip -9 > file.tar.gz ...
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Decompress logged GZIP binary data

In an effort to verify my app was sending back and forth with my server correctly, I had run tcpdump -w ~/capture.txt -s 0 port 80 on a server with proxy sitting in between to capture all ...
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2answers
106 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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1answer
103 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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1answer
50 views

Unix gzip more than one file at once

I have come to the end of my research with unix:> I'm new with unix and its enviroment, so i need your help guys. Long story short, i have a housekeeping script, which runs daily/weekly (it doesnt ...
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54 views

Incorrect size of image file made with dd and gzip?

In the past I made a backup of a partially full partition with dd if=/dev/sda1 | gzip -5 > file.gz. Some time later, when a free space on partition was smaller I made an image file again with the ...
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1answer
150 views

Cannot unzip xymon-4.3.18.tar.gz; “No such file or directory” error

I have a problem unzipping an archive. ubuntu:~% sudo gzip -dc xymon-4.3.18.tar.gz | tar xf - gzip: xymon-4.3.18.tar.gz: No such file or directory tar: This does not look like a tar archive tar: ...
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58 views

can't open .gzip archives retrieved with wget

I'm trying to download the content of a directory hosted on a server using wget in a cygwin terminal. I have no problem getting the files but they are all .gz archive and once downloaded they are ...
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164 views

Concatenate header of one file with tail of another

I have a large gzipped mysqldump file which contains some table definitions and then many insert statements. I'd like to edit the table definitions but leave the insert statements alone. The file is ...
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788 views

Caveats with gzip --rsyncable - no speedup

I am using (trying) gzip to compress an SQL file in an rsyncable way in order to transfer the backup with minimal delay. However it appears that this is not working, since the speedup is always 1.00. ...
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40 views

Removind same *.tar.gz archives

I have crontab event archives to .tar.gz some folder every N hours. Finally I have collection of .tar.gz files. Now I want remove duplicating archives (created while target files stays unchanged) How ...
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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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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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Simultaneously enable gzip and $STR_REPLACE in CGI in apache

I have a code in my CGI script for text replacement (for example replace 'red' with 'blue') $STR_SEARCH='red' $STR_REPLACE='blue' I am using the below code in .htaccess for enable replace function: ...
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GZIP file system code for Linux?

GZIP allows one to use file system codes. See page 7 of RFC 1952. What is (are?) the GZIP file system code(s) to use for Linux?
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30 views

Unzipping files downloaded from the Arxiv server

I want to download the source Tex files (not the pdf) of this document: http://arxiv.org/abs/1306.0322 After downloading here, I get a weird file with the ".0322v3" (the second part of the doc code) ...
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43 views

view zip file content in tree command style

I am seeing the zip file content using unzip -l files.zip | less but it outputs in ls style , is it possible to to display output in tree command style
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canot restore disk image with dd (target part filled with zero)

I have a RAID0 disk before, now I want change the size of it. From the manual, the only way is backup data, delete RAID, re-create with new size, and restore data. now I have many old 2.5" hdd, each ...
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16 views

gzip archive with damaged begin

How to recover as much as possible gzip file content when begin of this file is damaged? Is it possible? I tried commands gunzip -c , zcat, openssl zlib -d etc. Unfortunately that commands doesn't ...
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94 views

Composer Install .tar.gz

Trying to install node.js via composer (for automation). "repositories": [ "type": "package", "package": { "name": "nodejs/nodejs", "version": "0.12.6", "dist": { ...
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56 views

Need to create .tgz file in Windows

I need to create a .tgz file - NOT a tar.gz, a .tgz specifically - in Windows. I've tried 7zip, Peazip, and ProgramArchiver, but they all create .tar.gz files. I've also tried running 7z from the ...
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152 views

GZIP corruption with big files?

I came across a weird behavior: gzip v1.5 - Fedora r18 A file -rwxrwxrwx. 1 root root 3892576256 Apr 28 11:29 vm.qcow2 Initial checksum: md5sum vm.qow2 954c5461468d68daed3cef6a7b66bd8f vm.qcow2 ...
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57 views

Gzip, firmware problems

I am trying to unpackage firmware. The file command gives me this. gzip compressed data, ASCII, has CRC, extra field gzip -d gzip.gz gives this. gzip: gzip.gz has flags 0xcf -- not supported Any ...
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Is there an older version of gzip that returns different/larger outputs?

I don't know how else to phrase this question, but I stumbled upon a file which I know from the header is gzipped (1F8B0800) but I am unable to recreate the file no matter what I try (including gzip ...
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335 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 ...