Questions tagged [gzip]
`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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Is .gz the same as .gzip?
I'm decompressing a file with a .gzip extension and then re-compressing it using 7Zip. When re-compressed though it has a .gz extension.
Are a .gz and .gzip extension the same thing?
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Create a tar.gz from an image file (Linux or Mac) [closed]
Hi I have an img of a custom linux distro and I would like to convert it to a tar.gz file. (I am using Mac or Linux OS)
What is the most straight forward way to do it?
Thank you
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Is running gzip compression on a directory tree already in the process of being gzip'd safe?
Can I simultaneously compress the same directory tree using tar -zcvf (gzip) (e.g. in two separate shells, one after the other but the second one running before the first one finished) with two ...
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Drobo FS on Fedora tar backups fail w Input/output error, Child returned status 1
We're been running tar/gzip backups for a while on Fedora 25 Linux servers and we'd like to make sure aquota.user files get backed up. From the comments in the drobo-backup.conf file here's what we ...
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1
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Reading ZFS snapshots from tape is slow
I backed up my a zfs snapshot to tape using
zfs send tank/vertex@2017-01-20 | pv -cCTrbB 1g | pigz -c | pv -cCTrbB 1g | dd of=/dev/nst0 bs=1M
and then read it back using
dd if=/dev/nst0 bs=1M | pv -...
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2
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Compare compression: gzipping individual files vs. gzipping tar of same files
Consider a hypothetical archive format that does the following under the covers, given a list of files to pack:
gzip each file individually
Tar the gzips together
Contrast this with traditional tar ...
2
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1
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Gzip huge directory into separate .gz files for ssh transfer
I have a directory of ~200.000 .npy files with a total size ~100 gb. All files are stored directly below the main directory (i.e. there's no sub-directories). I need to transfer the directory and ...
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how much time takes to check the compressed file is available or not in that directory while using gzip compression in apache?
I am using static compression.(i.e.)In my application, When xml is generated, then I also creates its gzipped version and place near in it.
I am having little confusion in it. When clients sends ...
5
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0
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What is the difference in gzip compression levels?
Have been using gzip for a few years and usually I always gzip -9 out of habit as it is the highest level of compression. I understand that lower levels means less compression but quicker compress ...
2
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2
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Optimizing gzipped files for block-level deduplication
I have about 100TiB of compressed gzip data on cloud volumes. On my way to run a block-level dedup (duperemove for btrfs) I find that it was compressed without -n, which causes block-level difference ...
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How to enable Opencl for gzip?
gzip is a widely used lossless compression program. I have installed gzip and the version is as follows
gzip 1.2.4 (18 Aug 93)
Compilation options:
DIRENT UTIME STDC_HEADERS HAVE_UNISTD_H
How to ...
2
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3
answers
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Ungzip all gz files in Windows
I have many .gz files and I want to unzip all of them keeping their name and folder nesting.
How can I do this with Windows? Does 7zip have functionality that could complete this?
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Download very large files with HTTP
I'm downloading the PlaceNet compressed database of place images (~132GiB). Unluckily the downloaded file is corrupted. I have tried several times, each time the extraction is stopped at different ...
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Tar & save the output of a command
I want to tar the output of a command, say cat hello.world, to a compressed tar file.
I don’t want to save a temporary file and later tar it manually.
How can I do this?
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2
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gzip unix command with tar command
I want to zip more than one file using gzip, but when I unzip it I should get multiple files.
I tried tar with zip but tar created extra folders that I don't want.
The files I want to zip are cp1....
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Decompress all gz files in a tree
I am working on an Ubuntu 14 server.
Trying to create a tar.gz backup of my website, I accidentally gzipped every individual file in my /var/www/ directory, recursively. Now the whole tree consists ...
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Tar Archive All Files with Extension
I'm using this command to archive all PHP files:
find -name "*.php" | sudo tar -zcpvf my-archive.tar.gz -T -
It works great, except that the output is like this:
./file1.php
./file2.php
./file3.php
...
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1
answer
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How can I restore a MySql database dump direct from S3?
I have a gzipped database backup stored on S3 and would like to restore it to MySql without having to first download it due to disk space constraints. I tried the two commands below but got gzip: ...
0
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1
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Apache2 with mod_deflate serve bad css and js
Problem I am having is with css and js files served as file.css.gz and file.js.gz on one of enabled sites.
The content is served as this gibberish:
û—Û6’0ú»ÿ
sæÚNZ²H½ZΉ¿yìN&9Iv¿yå5sï¡H¨Å˜5$Õïõ÷·...
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Gzip'd tar archive Spanning Multiple Disks
Very similar to (How to create tar archive split into, or spanning, multiple files?), but specifically I would like to simultaneously:
tar and compress a 10 tb directory, having insufficient local ...
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1
answer
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Linux pv | gzip doesn't delete original file
I'm pretty new to unix so go easy.
Normally gzip file replaces file with file.gz (which i'm guessing is: create file.gz then rm file).
I have some rather large files I'm compressing and I like to ...
4
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2
answers
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Archive (.tar.gz) Corruption
I've got a .tar.gz archive that has definitely suffered some kind of corruption. The data inside the archive is obviously very precious to me and I'd really like to get my hands on as much as possible....
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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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0
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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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votes
1
answer
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Change the directory structure in tar.gz without extracting it
I have a tar.gz file that has the following structure when I extract.
/dir1/dir2/dir3/many_text_files(.txt)
I would like to change the structure as dir3/many_text_files(.txt)
A simple solution is to ...
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2
answers
5k
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How to zip an entire folder via gzip?
I am trying to zip an entire folder. There's this -r command to zip a folder recursively. Now this is good to zip all the files in a folder, but my predicament is I want to zip the folder in it's ...
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1
answer
776
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Ignore Zeros Not Working When Trying To Open Tar
I have a backup file from my system admins called backup.tar.gz. They mentioned that I need to use the --ignore-zeros/-i command when unzipping the file. However when I run the command as suggested
...
2
votes
1
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How to Tar/GZip just the files folders in the data directory?
I have a bunch of folders and files in /usr/local/bin/data that I want to tar.gz.
I have a bash script that sets the source folder to backup src='/usr/local/bin/data/*
When I open up the .tar.gz ...
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1
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Using dd to backup disk to same disk
I've tried using dd to back up my computer's hard drive, but I met with some rather confusing results. I've seen on multiple sources (e.g.: http://www.backuphowto.info/linux-backup-hard-disk-clone-dd,...
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0
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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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using compressed (.gz) files with command line scripts expecting uncompressed files
In order to save disk space, I've gunzip-ed a lot of my files that I regularly use. What is a best-practice way to still use the .gz version of these text files with, say, python scripts?
More ...
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1
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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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2
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Can a tar.gz file contain malicious code? Is a Mac vulnerable to such a tar.gz?
Can a tar.gz file contain malicious code that is similar to ZIP file? On a Mac particularly?
Edit:
Oops, I meant to ask the process of opening/untar a tar file on the Mac. Not the contents of the ...
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1
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Ctrl-C'd an in-place recursive gzip - is this likely to have broken anything?
So, today i was trying to zip up a large folder (that has a large nested set of subfolders), in linux. I did:
gzip -r bigfolder bigfolder.gz
and after it had been going for a couple of minutes I ...
3
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0
answers
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view zip file content in tree command style [duplicate]
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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2
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Chromium: prevent unpacking tar.gz
The latest Chrome and Chromium seems to unpack .tar.gz files automatically for me on OS X and Linux. When using wget with the same URL, it shows:
$ wget http://mydomain/dir/file.tar.gz
...
HTTP ...
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1
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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": {
...
0
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4
answers
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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 https://superuser.com/a/546509/461740:
tar cv /path/to/directory | gzip -9 > file.tar.gz
...
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1
answer
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How do I use HTTrack to download gzipped files from URLs with accented characters?
I am downloading a site with HTTrack with spotty results. Several directories return 2 or more versions of the same HTML file. These duplicates in any given directory may include:
a file named ...
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1
answer
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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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Gzip compression on Apache using .htaccess
As per http://gtmetrix.com/enable-gzip-compression.html i'm trying to enable gzip compression on apache webserver adding code mentioned below in .htaccess, but it's not working ; can you please ...
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2
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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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1
answer
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Can't extract tar.gz file from Apache
I'm trying to do install manifoldcf on Ubuntu.
I downloaded the file - apache-manifoldcf-1.9-src.tar.gz - directly
from Apache (and I've tried different version as well with the same results).
Using ...
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2
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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 requests. ...
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votes
2
answers
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What is the correct MIME type for a tar.gz file?
What is the correct MIME type for a tar.gz file?
I've searched around and found several values being used, including:
application/x-gzip
application/x-gtar
application/x-tgz
But I could find no ...
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0
answers
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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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1
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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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1
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dd , pv , gzip and exclude directory, possible?
Is it possible to do the following:
dd if=/dev/hdx | pv | gzip > /path/to/image.img\
--exclude=/temp --exclude=/lost+found --exclude=/proc --exclude=/path/to/image.img
So I want to make a backup ...
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votes
2
answers
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How to tell of a GZip file is still being written while being copied
I am getting a gzip file in a path.
Input Folder Path:
<server>/input_gate
I want to check whether the GZIP file I am getting in this folder are valid?
I have used the following command. It ...
6
votes
2
answers
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Is Gzip supposed to honor original filename during decompress?
This question stems from a Crypto++ library question on Stack Overflow: How to add filename to archive if compressing using Gzip class?.
Gzip, as specified in RFC 1952 has an optional field for the ...