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

learn more… | top users | synonyms

3
votes
1answer
25 views

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 ...
1
vote
0answers
17 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
2
votes
2answers
100 views

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 ...
0
votes
0answers
36 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": { ...
0
votes
4answers
94 views

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 ...
1
vote
1answer
69 views

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 ...
0
votes
1answer
34 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 ...
0
votes
1answer
67 views

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 ...
0
votes
1answer
40 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 ...
3
votes
1answer
74 views

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 ...
0
votes
2answers
88 views

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 ...
2
votes
2answers
68 views

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 ...
-2
votes
1answer
58 views

is there a gzip like tool with password protection for windows? [closed]

I want to encrypt some text files on a server that could be unencrypted on the fly when needed for searches (I would use it with cygwin). I was thinking of something like gzip and gunzip type of a a ...
0
votes
0answers
38 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 ...
0
votes
1answer
96 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: ...
0
votes
0answers
86 views

How to disable mod_deflate in a subdirectoy using htaccess

I have a site that mod_deflate and gzip breaks a script in a subdirectoy. I am on a shared host. Is it possible to use compression on the root level and disable it on a specific subdirectory using ...
0
votes
1answer
161 views

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 ...
3
votes
2answers
54 views

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 ...
3
votes
2answers
97 views

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 ...
1
vote
1answer
92 views

How to extract single file from large tar/tar.gz file

What I want to do is to extract a single file from a huge tar file, instead of extracting the whole tar. I am using RHEL 6.4 I Googled it and tried the following: tar --extract --file=some.tar ...
1
vote
0answers
25 views

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 ...
3
votes
1answer
224 views

Not sure gzip has decompressed the whole file

I am decompressing a list of files using gzip: At any time it skips from one file to the next, I read (I am using the verbose option): star_60out.txt.gz: 91.0% -- replaced with star_60out.txt or ...
0
votes
1answer
133 views

extracting multiple .gz files, and printing the name of the extracted file

I would think this is easy but I'm blocking… I have a directory with a series of log files (from minecraft server…): 2014-09-28-1.log.gz 2014-09-29-1.log.gz 2014-09-30-1.log.gz 2014-10-01-1.log.gz ...
1
vote
2answers
114 views

Gzip thousands of files efficiently in a single pass

I want to gzip the contents of a couple of thousand of tiny files into a single file. While I could do it with something like for file in $(find . -iname 'pattern'); do; cat $file | gzip - >> ...
0
votes
1answer
47 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 ...
0
votes
1answer
51 views

how to extract lots of gz files in windows

I have 36,348 .gz files. I need to extract them all the same directory. In unix I would use gunzip and so forth from the shell. How would I do it on my windows 7 machine? I can't even get winrar to ...
1
vote
1answer
240 views

Running find…exec tar czvf only archives one file…need all files

When attempting to run find . -iname "*.gz" -mtime +7 -exec tar czvf all_gizip_$(date +%Y-%m-%d).tar.gz {} \; I get the list of files ./corosync.log-20140620.gz ./corosync.log-20140618.gz ...
1
vote
1answer
51 views

How to revert a “gzip -r folder/” command?

I accidentally compressed all the files using the Gzip method which compresses all the files (not directories) individually, replacing the uncompressed files with the .gz compressed files. How can I ...
61
votes
2answers
6k views

Why is piping 'dd' through gzip so much faster than a direct copy?

I wanted to backup a path from a computer in my network to another computer in the same network over a 100 Mbit/s line. For this I did dd if=/local/path ...
0
votes
1answer
888 views

How to compress a large file to many smaller zip files with defined size?

I have a very large file, e.g. 100GB, and I want to compress it to many smaller zip file, with each file cannot larger than 1GB, what would be the most suitable commands to do it? remark: I want to ...
0
votes
0answers
122 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 ...
1
vote
1answer
101 views

Need help in the shell script - gunzip and file command

This is on Ubuntu 12.04. I have a custom webkit based application where "browser" saves bunch of cache files. When triaging the problems, I have to inspect the cache. The cache directory holds many ...
3
votes
1answer
162 views

Why does tar with -z option create archive with different hash everytime

Can you tell me why tar czf archive.tar dir creates archive with different hash everytime (I check with 'md5sum') Without compression parameter -z or with parameter -j instead all works fine. ...
0
votes
1answer
117 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 ...
0
votes
1answer
25 views

Copying Jar files into single zip file

I am trying to compress the hundreds of jar files into a single zip file that can be transferred to a different location. Please help.
0
votes
1answer
212 views

Tar up only 3 specific files in command line with linux

Is it possible with one command to tar up 3 files into one tar archive? For example, tar up: public_html.tar.gz dbapp.sql dbwp.sql into a tar file called bak.tar.gz
1
vote
2answers
156 views

Search zipped *and* non-zipped files in one hit

I have a folder with a mix of zipped and unzipped log files which i want to search. I can search the non-zipped with grep -r "my-search-string" /path/to/folder and search the zipped files with ...
0
votes
1answer
58 views

dd a partition and keep device structure

How can I dd a partition while keeping its device structure? Source device: [root@cal-7-3 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 37.3G 0 disk └─sda1 8:1 0 ...
3
votes
2answers
329 views

Compressing compressed .tar.gz files deterministically

I want to perform a series of recompressions of compressed files to study their properties. At first, I tried simply recompressing .zip files in a loop: for f in $(seq 1 100) do zip $f.zip -9 -v ...
1
vote
1answer
307 views

How to convert a file of format tar.gz to tar.bz2?

Like the title says, how do I do this conversion from the Linux console?
0
votes
2answers
113 views

rsync: gzip on source tolerant

I need to transfer a couple of log-files each hour to a logstorage which all users can reach, and I use rsync for do that, but the problem comes when the log-file is rotated and automatically zipped, ...
0
votes
1answer
621 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. ...
0
votes
3answers
272 views

What are good compression algorithms for delta synchronization?

When syncing large files over a slow link, it is often useful to use delta compression in order to reduce the bandwidth used. It is also useful to compress files as they take up much less space. ...
0
votes
0answers
49 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 ...
5
votes
2answers
4k views

How can I get the uncompressed size of gzip file without actually decompressing it?

Please find my OS details: $ uname -a AIX xxyy 1 6 000145364C00 I've tried the following command to get size of a file in gzip archive: $ gzip -l mycontent.DAT.Gz compressed uncompr. ratio ...
10
votes
3answers
2k views

Files with same content but with different md5sums when gzip'd?

I don't know why this is happening, but I upload some files to Amazon S3 then delete the sent files checking their md5sum both in Amazon and locally. But recently I found this issue about the same ...
1
vote
2answers
124 views

How to extract such a compressed file?

I have been asked to extract a ZIP file having in it 3 tar files and each tar file contains around 3000 gz files. I had to extract the main ZIP file first then extract the tar files second then ...
2
votes
1answer
555 views

Do curl and wget open gzipped files automatically?

I made two http calls to the same gzipped resource from two different machines - RHEL and OSX. curl http://example.com/file.gz The first call returned an expected binary output: /�IQ���} The ...
-2
votes
4answers
126 views

“.gz” extension somehow appended itself to EVERY FILE on my site… how do I undo it?

Somehow I accidentally appended the extension .gz to ALL files in my entire website directory. How do I undo this? I need them to retain their original file extensions (EG: picture.jpg.gz -> ...
4
votes
3answers
3k views

Why is gzip slow despite CPU and hard drive performance not being maxed out?

I have some JSON files, 20 GB each, that I want to compress with gzip: gzip file1.json This takes up one full CPU core, all fine. It processes around 25 MB/s (checked in atop), my hard drive can ...