Questions tagged [7z]

7z is a compressed archive file format. It's also an application that handles multiple compression formats.

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Why 7z not using enough CPU?

CentOS 9. 3 vCPU VM with 4Gb RAM. I run a cron job with 7z compressing 35Gb data in 150 files 7za a -mx=9 -mmt=3 ... RAM usage - 18%, disk queue is very small, CPU is 61% on average. Why not 100% ? ...
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Alternatives to compressed tarballs

I am reading/writing data from/to tapes using Debian and recently ran into an issue where I needed to figure out the size of the stored data stream, i.e. the data actually written to the tape (see ...
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unrar multiple files wity multiple files

I have 1000s of rar files and list of password in txt. i want to unrar all those files trying all passwords. Tried: for file in "$(ls *.rar)"; do for f in "$(cat pass.txt)"; do ...
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7-zip extraction using multiple cores?

I have stuff.7z.001 to stuff.7z.007. They are big. Is there a way to 7z x in Linux to take advantage of multiple cores and speed things up? also, how does one run the 7-zip gui in rhel/centos 7 ? I ...
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Difference between two tar commands -cf and -Jchf

I have a python script that is running in two places, two different, but similar commands: os.system("tar cf - -C %s . 2>/dev/null 3>/dev/null | 7za a -p%s -si %s 1>/dev/null 2>/dev/...
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External extractor '7z' error when extract F/W image use Binwalk

Got error when tried to extract compressed F/W image use Binwalk 2.3.3: WARNING: Extractor.execute failed to run external extractor '7z e -y '%e'': 'module' object has no attribute 'DEVNULL', '7z e -y ...
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7z command to create a XZ file

The man page says 7z tool supports 7z, LZMA2, XZ, ZIP, Zip64, CAB, RAR, ARJ, GZIP, BZIP2, TAR, CPIO, RPM, ISO, most filesystem images and DEB formats. And it says we could pass the type as -t{Type}. ...
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How to create ".img" from files

I'm trying to alter some files inside an ".img" file. Example: logo-x.squashfs.img romfs-x.squashfs.img safeEnv.img sign.img For that, I extracted the ".img" using 7-Zip and made ...
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Need help with 7z command

I have a file called BaseSystem.dmg which contains a hfs+ system image as well as other files. I am trying to extract just the hfs+ system image file using 7z from the p7zip-full package. I have tried ...
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Why can't I uncompress a huge file without going out of memory in Linux while Windows can?

I do have a 36GB .zip file to uncompress, which while being extracted will end up freezing the PC because of going oom (out of memory) with file-roller and the unzip command in a freshly installed ...
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Avoid to fully rewite a 7z file (10 GB) when updating a few files in it

Following the method explained in Incremental backup with 7zip, I can create an archive of 10 GB of documents with 7z u -up0q3r2x2y2z1w2 -mx=0 -p -mhe=on backup.7z /path/to/documents It's encrypted (...
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What archival method (tar, zip, 7z, etc) allows me to retain folder modification dates on macOS?

I currently have a directory in a hard drive, say TopFolder which contains 3 subfolders, Folder1, Folder2, and Folder3. When I am in the top level directory of the hard drive, and do: tar cf TopFolder....
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3 votes
2 answers
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Preserve file permissions and symlinks in archive with 7-Zip

I have a directory test with three files, ls -l test: total 8 -rw-r--r-- 1 mb mb 16 Jul 25 11:12 regular_file -rwxr-xr-x 1 mb mb 19 Jul 25 11:02 script.sh lrwxrwxrwx 1 mb mb 12 Jul 25 11:14 symlink -&...
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GNU parallel + gunzip (or 7z, or bsdtar, or unzip): extract every "archivename.zip" into (to-be-created) its "archivename" subfolder

As in title. I've got a lot of ZIP archives that I want to extract. All archives have their own unique name. All archives contain files only (inside archives there are NOT folder(s) at all: no ...
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How to get file names in archive with 7z

Using 7z, I'd like to print the names of the files inside an archive. The output of 7z l myArchive.7z is 7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21 p7zip Version 16.02 (...
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Unable to open 7z-Archive: Open ERROR: Can not open the file as [7z] archive

I'm trying to open a 7z-File which I've packed with my phone using the ZArchiver app. Probably the process was interrupted and some files have gone missing, but that's not a huge problem. Ark and ...
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7zip client: Compress dirs with method PPMd & compression level Ultra

So today, I am trying to compress multiple folders, of old photos which I want to backup. I've found this article, that says method PPMd, and compression level Ultra, are far better for image ...
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3 votes
5 answers
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Create archive (tar.gz, ...) from file given via stdin

I would like to automatically create a compressed archive from a file given via stdin (or create the archive, if it doesn't exist yet), while specifying the file name that it's going to have inside ...
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Batch 7zip all files separately in a directory (Centos 7.6)

I am trying to 7zip all files inside a directory separately into their own archive (for each file) in Linux Centos 7.6. Been looking around for a while but never found a method.
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How to obtain only fully decompressed files in destination folder when decompressing zipped file?

I'm trying to decompress a big zip file containing more that a hundred files, 128 MB each. When the decompression is interrupted, I have to delete the last file that was being decompressed, and ...
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7zip archive extraction fails [closed]

I'm going to use bigfile, smallfile1, and smallfile2 to always refer to the same file names without file extension. The two small ones don't have any. I created an encrypted 7zip archive using this ...
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How to split a compressed file?

I have a 44GB 7z compressed file that I compressed with lzma2 and it took around 11 hours (original file is a text file of 285GB). 7z a -t7z Files.7z -m0=lzma2 -mx=9 -aoa So, what I want is to do is ...
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3 answers
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Extracting a specific file from an archive using 7-Zip

I run Linux Live CD and I need to extract a specific file from a wim-archive that is located on a disk drive. I know a full path to the file in the archive: xubuntu@xubuntu:~$ 7z l winRE.wim | grep -...
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299 views

Create separate 7z archives for each directory in the current directory and additionally parallelize through GNU Parallel

I have about two hundred sub-directories located within a directory of interest: $ ls backup 201302 201607 201608 201609 201610 201701 201702 201705 201801 201802 I want to create a 7z archive xyz....
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How can I combine multiple 7z archives into one?

I'm trying to make a bash script that takes a large number of 7z archives and combines them into one archive. Here's what I have so far. #!/bin/bash DUMPPATH="/home/backups/dumps/" NEWPATH=$DUMPPATH"...
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3 answers
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Check if file is an archive; if yes, extract

How can I check if a file is an archive and then extract it with 7z? I understand that I could check it by file command but it won't work in scripts because of its output. I can't predict what type of ...
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extract multipart 7z files in centOS terminal

How do I extract multipart 7z files (doc.7z.001, doc.7z.002...., doc.7z.060) in centOS terminal? I tried concatenating all the parts to a single file using this command below, cat doc.7z* > ./docs....
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bash script: a more elegant way to perform these operations:

I have these three files: file.txt.7z = 5.4GB file-1.txt.7z = 251M file-2.txt.7z = 7.7M And they are the only files in a directory: $ tree . ├── file.txt.7z ├── file-1.txt.7z └── file-2.txt.7z I ...
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How to overwrite content in a 7z archive created from a pipe?

Purpose I'm creating a function that dumps a database table to a compressed 7z file. The output of mysqldump is piped to 7zr with the -si switch. There should always be one file and one file only in ...
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Creating a checksum of a 7zip archive being created from a tar file being created

I want to solve a problem (which you can read about here as I don't feel like this should be part of the question). So this is what I came up with: $ tar -cO Templates | 7z a -si -mx=3 -p /t/out.tar....
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Encrypt file list when creating 7zip archive on command line

When creating a 7zip archive with file-roller, there is a checkbox labeled "Encrypt the file list too". And it seems to work as you cannot see the file list when opening an archive created with this ...
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2 votes
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Create a 7z archive without compression using Ark

I'm using KDE on Debian Stretch, and Ark is installed by default (version 16.08.3). I find it really convenient and easy to use. However, I cannot find a way to create a 7-zip archive without ...
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How can I repack zip to 7zip?

How can I safely and quickly repack a zip archive to a 7zip archive? I checked options of 7zip program but I don't see any option to repack. I know I can extract to directory and then pack this ...
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Validate password for a large set of zip files

I am working on an ETL process for a customer. Another vendor has provided the raw data as a set of approximately 100 password protected ZIP files. I want to validate that the password given is ...
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gzip uncompressing a bigger file than it lists

So when I use the list flag of gzip the uncompressed size is listed as 3.5g (with ratio of -9.0%): $ gzip -l piTorrentbox101216.gz compressed uncompressed ratio uncompressed_name ...
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4 votes
3 answers
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file-roller: An error occurred while loading the archive (Zip/7z)

As I don't use GUI for archive extraction much, I don't know since when this error I am getting: An error occurred while loading the archive. This error I get while trying to open an ordinary Zip ...
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1 vote
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What is the proper way to use an alternative binary

I am on Linux Mint 18 Cinnamon 64-bit. I have these binaries of 7z and their versions on my system: /usr/bin/7z 7-Zip [64] 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18 and /usr/local/...
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2 answers
1k views

File zipped using 7za cannot be unzipped using zip utility

I have created this file using 7za command called test.war # file test.war test.war: 7-zip archive data, version 0.4 I am trying to extract this file in another RHEL machine using command : # unzip ...
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9 votes
4 answers
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How to specify character encoding for 7z?

Doing 7z x on an archive gives me '20 ª.1 ¯® '$'\302\212''¨à®¢®£à ¤áª ï ã«.rtf' IMG_6527.JPG ''$'\302\212''¨à®¢®£à ¤áª ï, ¨áâ.doc' IMG_6532.JPG ''$'\302\204''®¯ ᮣ« è¥­¨¥(3).doc' ...
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7zip and Move Files with Spaces in Bash Script [duplicate]

I'm trying to 7zip and move some files that look like this: ./[1998] - This year's book.pdf ##note the brackets, spaces, and apostrophes My script looks like this: for file in `ls ./unprocessed/*....
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How to use 7z and "for file" with multiple file inputs?

I have multiple files in a folder like: 1.txt 2.txt 3.txt ... 100.txt And I want to use 7z to compress single files, generating 1.7z, 2.7z 3.7z... I'm trying to use this: for file in {1..100} ./{1.....
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2 votes
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How to get number of files in a 7z

I want to get the number of files (included directories) contained in the root of a 7z archive, but the 7z command on Linux don’t bring a simple way to only get the number and noting else. For ...
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3 votes
2 answers
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E_FAIL Error in 7zip

I've done a Backup some time ago using 7zip, in which I split the Files in 14 2GB (approximately) files. I'm running Ubuntu Server 15.10. This is what I'm trying to run in order to extract them: 7z ...
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Command to verify CRC (CRC32) hashes recursively

With the commands md5sum, sha1sum, sha256sum I can take a text file having an hash and a path per line and verify the entire list of files in a single command, like sha1sum -c mydir.txt. (Said text ...
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How to use bash to archive all directories?

I'm trying to learn bash -slowly- but finding it difficult to get a grasp of the more technical aspects without a real-word example that fits something I would want to use. To that end, I'd like to ...
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Function for archiving arbitrary files with encryption

I'm no so advanced in bash so can not make my function work properly. Here is the code: archive() { for f in $PWD do for ((i=1; i++;)) do 7za a "$1".7z $f -pSECRET -mhe done ...
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Compressing files using p7zip from the command-line

I would like to compress four ISO files using 7z into a new archive called ISOs.7z from the command-line on my Sabayon machine. These are the commands I have tried so far (I know none of these specify ...
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3 votes
1 answer
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Pass passwordlist to 7zip

I'm writing a shellscript to automate my 7zip, rar etc extraction tasks. Normally JDownloader2 does this for me when I download files through it, but when I download files by hand I will still need to ...
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5 votes
2 answers
4k views

Get percentage information from 7z command in bash

With archives containing more than 30 files, list of extracted files quickly stops being interesting. I a making a script that extracts a .war archive into a tomcat app folder: When looking in help ...
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1 vote
1 answer
2k views

7z is not excluding directories from exclude file

In a bash script I want to create an archive with 7z and exclude some directories. I created an exclude file that only contains one entry: excl_dir/ My script: #!/bin/bash archiveName="my_archive" ...
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