Activity for mdadm
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mdadm posted a comment on discussion Open Discussion
Thanks Igor for answering to question 2, but questions 1 and 3 remain unanswered. Question 1 is related to command line 7zip (Linux has it's temp folders in /tmp, /var/tmp, MacOS - echo $TMPDIR).
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I have some questions about usage temp folder by 7-zip: Is 7zip console use temp folder for any operation on Windows/Mac/Linux? For what operations 7-zip is using temp folder? What will happen when empty space in temp folder will end when 7-zip will be using it, for example: a) 7-zip will open big archive (but didn't end this operation) and temp and partition space will also end? b) 7-zip will open big archive (and end this operation), but will be updating this archive and temp and partition space...
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Default compression algorithms used by 7-Zip are: - zip: deflate (zip may be compressed by not standard algorithm ppmd - good for text files) - 7z: lzma or lzma2 - tar: alone don't use any compression, it just group directories and folders in uncompressed archive, but may be in variants: - tar.gz or tgz: tar archive compressed by gzip - tar.bz or tbz: tar archive compressed by bzip2 - tar.xz or txz: tar archive compressed by xz (lzma or lzma2) - tar.*, etc.: tar archive may be compressed by any compressor:...
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Nevermind: I found solution what I was looking for: 7z l /dev/sdb1 | less 7z e /dev/sdb1 '-ir!dir/file' 7z e /dev/sdb1 '-ir!dir/*' /dev/sdb1 is not mounted! I wonder if it works for APFS, but I won't check - I don't have disk with that fs. Update: Ok, this also works and is simplier: 7z e /dev/sdb1 'dir/file' 7z e /dev/sdb1 'dir/*' Thanks Igor for your effort!
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Nevermind: I found solution what I was looking for: 7z l /dev/sdb1 | less 7z e /dev/sdb1 '-ir!dir/file' 7z e /dev/sdb1 '-ir!dir/*' /dev/sdb1 is not mounted! I wonder if it works for APFS, but I won't check - I don't have disk with that fs.
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I know how to view directories and files on device by command run as root: "7zz l /dev/sda | less", but how to extract from command line single file or directory containing file(s) from device with filesystem supported by 7-zip (like ext4) but which can not mounted on Linux?
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Leave powershell, work in cmd.exe.
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Do in cmd: "7z.exe l archive" to see if there is something interesting (I believe that it does not write anything to temp). Install some RamDisk program, create ramdisk, asign drive letter and extract that archive to that ramdisk through cmd command or in gui, but don't do drag-drop to extract. as it extract temporary to temp.
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I did some tests some time ago with Winrar and rar4/5 archives with this additional information for repairing/restoring archives. I modified/changed some part of archive, smaller (1 or few bits) or bigger in different part of archive in hex editor. Only one change at a time. The tests showed that even Winrar rar5 archive with recovery record is not so reliable as one think. It all depends in which part of file and how much bits are changed. Rar4 archive: over a dozen of kB, rar5: several dozen of...
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I did some tests some time ago with Winrar and rar4/5 archives with this additional information for repairing/restoring archives. I modified/changed some part of archive, smaller (1 or few bits) or bigger in different part of archive in hex editor. Only one change at a time. The tests showed that even Winrar rar5 archive with recovery record is not so reliable as one think. It all depends in which part of file and how much bits are changed. Rar4 archive: over a dozen of kB, rar5: several dozen of...
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I did some tests some time ago with Winrar and rar4/5 archives with this additional information for repairing/restoring archives. I modified/changed some part of archive, smaller (1 or few bits) or bigger in different part of archive in hex editor. Only one change at a time. The tests showed that even Winrar rar5 archive with recovery record is not so reliable as one think. It all depends in which part of file and how much bits are changed. Rar4 archive: over a dozen of kB, rar5: several dozen of...
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I did some tests some time ago with Winrar and rar4/5 archives with this additional information for repairing/restoring archives. I modified/changed some part of archive, smaller (1 or few bits) or bigger in different part of archive in hex editor. Only one change at a time. The tests showed that even Winrar rar5 archive with recovery record is not so reliable as one think. It all depends in which part of file and how much bits are changed. Rar4 archive: over a dozen of kB, rar5: several dozen of...
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I did some tests some time ago with Winrar and rar4/5 archives with this additional information for repairing/restoring archives. I modified/changed some part of archive, smaller (1 or few bits) or bigger in different part of archive in hex editor. Only one change at a time. The tests showed that even Winrar rar5 archive with recovery record is not so reliable as one think. It all depends in which part of file and how much bits are changed. Rar4 archive: over a dozen of kB, rar5: several dozen of...
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I did some tests some time ago with Winrar and rar4/5 archives with this additional information for repairing/restoring archives. I modified/changed some part of archive, smaller (1 or few bits) or bigger in different part of archive in hex editor. Only one change at a time. The tests showed that even Winrar rar5 archive with recovery record is not so reliable as one think. It all depends in which part of file and how much bits are changed. Rar4 archive: over a dozen of kB, rar5: several dozen of...
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Now done on CPU frequency scaling governor "performance". CPU frequency was stable. I used default governor schedutil because of powersafe reasons.
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First my questions: 1) What it means: "CPU hardware threads: 2 / 4 : 3" ? 2) What it means: "OPEN_MAX:1024" ? This CPU has only 2 cores, no ht, no threads. I can check this in multiple ways and it returns only 2 cores (cat /proc/cpuinfo, lscpu, top, htop, getconf _NPROCESSORS_ONLN). nproc returns 2, but nproc --all returns 4 (don't ask me why, but this probably is also incorrect for other cpus). As for frequency I have set default CPU scaling governor schedutil and 1200 MHz is mostly all the tim...
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Old system here: DDR2 667Mhz.
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What do you meen by "connect archives and folders as virtual disks"? What do have archives to virtual disks? The simplest solution would be to create iso file and mount it.
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This is in bash console, similar would be in win cmd: for d in */ ; do 7z a -mx9 video.7z * ; done
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If it is something like "filename.7z.001" ... "filename.7z.NNN then you can view, combine and extract it only by extracting the first file "filename.7z.001". If after extraction you have multiple files and still want to combine them then see my previous post about console commands.
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You can not extract files other that what they were before compression, but you can combine them in console (number them so you have right sequence): - on Windows in cmd.exe: copy /b file1+file2+file3 output_file - on Linux and maybe macOS in bash and maybe other shells: cat file* > output_file
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According to afio manual, cpio should extract it; in console 7z i also displays cpio, so it should decompress.
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Is 7z command line version also use temp folder? Is option -w needed when large archive is extracted and we don't want to use c:\temp directory?
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You may try smartversion (or rsync) to effectively "synchronize" large remote folders. Smartversion have executables for multiple OSs.
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7z l archive.7z or 7z l -slt archive.7z for all files in archive. For archives with many files: 7z l -slt archive.7z | less
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Some of antivirus producers and some individuals which are analyzing ransomware and it's weaknesses sometimes produce tools to extract that encrypted content. Search that on internet. But you have to find out what ransomware you were infected. Look for and match any signs of infection on device, how encrypted files are named, compare hashes of malware remnants to hashes in ransomware analysis, etc.
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7-Zip is very prone to errors and incompatibilities in archive. If it can't extract file then try any other archiver/extractor which you can find. There are many of it, especially on windows. If you were lucky, then maybe you will succeed, but even then archive may be corrupted...
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7-Zip is very prone to errors and incompatibilities in archive. If it can't extract file then try any other archiver/extractor which you can find. There are many of it, especially on windows, If you were lucky, then maybe you will succeed, but even then archive may be corrupted...
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What are 7-Zip archive limits: max 7z and zip archive size, max file number in archive, max directory length in archive. Does this limits depend by chosen algorithm (lzma(2), deflate, ppmd) or solid, non-solid archive? Anything more that one need to know or take into account before creating huge archive?
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You can use in console: > file to zero your file and then delete it.
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Try this: 7z a -v50m test.7z "c:\test"
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No password protect by default, as this would require to store password somewhere in the system and that would be less secure (even storing it as a hash has some kind of risk). Instead when you want to create encrypted archive you have to every time write your unique password. Choose AES encryption as it is stronger than zipcrypto. When you encrypt 7z archive you can click on "Encrypt file names" option to further protect your archive (for zip archive this option is not supported), or in cmd line...
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No password protect by default, as this would require to store password somewhere in the system and that would be less secure (even storing it as a hash is has some kind of risk). Instead when you want to create encrypted archive you have to every time write your unique password. When you encrypt 7z archive you can click on "Encrypt file names" option to further protect your archive (for zip archive this option is not supported), or in cmd line use option -mhe+ / -mhe=on which do the same: 7z.exe...
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In cmd try: cd (cd alone will display your current directory and then will be archive.txt file when you run command below): "C:\Program Files\7-Zip\7z.exe" l "C:\Users\Anonymous\Desktop\1.7z" > archive.txt If your current directory is "C:\" or "C:\WINDOWS\" then you must have admin rights to write to this directories. If you don't want to run this commands with admin rights first change to other directory where you have rights to write: cd "C:\Users\Anonymous\Desktop\" cd (to show current dir) "C:\Program...
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In cmd try: cd (cd alone will display your current directory and then will be archive.txt file when you run command below): "C:\Program Files\7-Zip\7z.exe" l "C:\Users\Anonymous\Desktop\1.7z" > archive.txt If your current directory is "C:\" or "C:\WINDOWS\" then you must have admin rights to write to this directories. If you don't want to run this commands with admin rights first change to other directory where you have rights to write: cd "C:\Users\Anonymous\Desktop\" cd (to show current dir) "C:\Program...
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In cmd try: cd (cd alone will display your current directory and then will be archive.txt file when you run command below): "C:\Program Files\7-Zip\7z.exe" l "C:\Users\Anonymous\Desktop\1.7z" > archive.txt If your current directory is "C:\" or "C:\WINDOWS\" then you must have admin rights to write to this directories. If you don't want to run this commands with admin rights first change to other directory where you have rights to write: cd "C:\Users\your username\Desktop\" cd (to show current dir)...
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press Ctrl+r and write cmd.exe For simple "7z.exe l archive.7z > file.txt" you have to be in the same directory where is 7z.exe and archive.7z, but you probably will be in "C:\WINDOWS>", but you may navigate or point to those. So navigate to directory where you installed 7-Zip (probably "C:\Program Files\7-Zip\") and point to place where is your archive, for example: go to root C: drive directory (C:) and then by pressing first letter(s) of directory you want to go (pr) and press "tab" key for auto...
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press Ctrl+r and write cmd.exe For simple "7z.exe l archive.7z > file.txt" you have to be in the same directory where is 7z.exe and archive.7z, but you probably will be in "C:\WINDOWS>", but you may navigate or point to those. So navigate to directory where you installed 7-Zip (probably "C:\Program Files\7-Zip\") and point to place where is your archive, for example: go to root C: drive directory (C:) and then by pressing first letter(s) of directory you want to go (pr) and press "tab" key for auto...
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press Ctrl+r and write cmd.exe For simple "7z.exe l archive.7z > file.txt" you have to be in the same directory where is 7z.exe and archive.7z, but you probably will be in "C:\WINDOWS>", but you may navigate or point to those. So navigate to directory where you installed 7-Zip (probably "C:\Program Files\7-Zip\") and point to place where is your archive, for example: go to root C: drive directory (C:) and then by pressing first letter(s) of directory you want to go (pr) and press "tab" key for auto...
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7z.exe l archive.7z > file.txt
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Will the archive file retain the folder/sub-folder details for subsequent extraction into the same folder structure? Yes, if you extract archive with option: 7z x archive.7z and no, if you extract archive with option: 7z e archive.7z With e option all files will be extracted to one current directory. If there are 2 or more files with same names 7-zip will ask you what to do (overwrite, skip, quit, etc.). 7-Zip will extract all to current working directory. You may use option -o to extract to specified...
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Will the archive file retain the folder/sub-folder details for subsequent extraction into the same folder structure? Yes, if you extract archive with option: 7z x archive.7z and no, if you extract archive with option: 7z e archive.7z to current working directory. Option -o to extract to specified directory, for example: 7z x archive.7z -oc:\mydir Note no space after option -o. This convention is for all options after "-" in 7-Zip.
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Open console (cmd) window and type: 7z.exe to see program options. If that don't work, go to directory where 7-Zip is installed (for example): cd "C:\Program Files\7-zip\" or cd "%Program Files%\7-zip\" or writing a few begining lettrs of directory and pressing TAB key on keyboard: C:\WINDOWS\Users\user> "C:\Program Files\7-zip\7z.exe" Most interesting options for you may be: -i[r[-|0]]{@listfile|!wildcard} : Include filenames -x[r[-|0]]{@listfile|!wildcard} : eXclude filenames -r[-|0] : Recurse...
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Open console (cmd) window and type: 7z.exe to see program options. If that don't work, go to directory where 7-Zip is installed (for example): cd "C:\Program Files\7-zip\" or cd "%Program Files%\7-zip\" or writing a few begining lettrs of directory and pressing TAB key on keyboard: C:\WINDOWS\Users\user> "C:\Program Files\7-zip\7z.exe" Most interesting options for you may be: -i[r[-|0]]{@listfile|!wildcard} : Include filenames -x[r[-|0]]{@listfile|!wildcard} : eXclude filenames -r[-|0] : Recurse...
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Try: 7z a -r arch_name.7z "folder1\*.txt" for txt files, option -r to recurse subdirectories or 7z a -r arch_name.7z "folder1\*" or even 7z a -r arch_name.7z "folder1\" for all files and folders in folder1 quotation marks: " " - use when name of file or directory (folder) contains spaces.
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Try: 7z a -r arch_name.7z "folder1*.txt" for txt files, option -r to recurse subdirectories or 7z a -r arch_name.7z "folder1*" or even 7z a -r arch_name.7z "folder1\" for all files and folders in folder1 quotation marks: " " - use when name of file or directory (folder) contains spaces.
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Try: 7z a -r arch_name.7z "folder1*.txt" for txt files, option -r to recurse subdirectories or 7z a -r arch_name.7z "folder1*" or even 7z a -r arch_name.7z "folder1\" for all files and folders in folder1 " " - use when name of file or directory (folder) contains spaces.
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Try: 7z a -r arch_name.7z "folder1*.txt" for txt files, option -r to recurse subdirectories or 7z a -r arch_name.7z "folder1*" or even 7z a -r arch_name.7z "folder1\" for all files and folders in folder1 " " - use when name of file or directory (folder) contains spaces.
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There was a change between 7z versions: create archive named '-test.7z' with a file list named 'list.txt' 7z a -- -test.7z @list.txt (7zip 16.02) 7z a -i@list.txt -- -test.7z (7zip 18.01+)
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Thanks Igor, it worked!
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I want to create zip archive with PPMd compression method from command line because I noticed it has best ratio when compressing plain text files, but I get error about wrong argument (or something like that): System ERROR: E_INVALIDARG I try that commands: 7z a -tzip -m=ppmd file.7z file 7z a -tzip -m0=ppmd file.7z file 7z a -tzip -m1=ppmd file.7z file ... 7z a -tzip -m9=ppmd file.7z file but when changed archive type it worked: 7z a -t7z -m9=ppmd file.7z file 7z a -t7z -m9=ppmd file.zip file 7z...
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Hi Igor! I tried your command (7z l 0.ntfs -mld > a.txt) with latest 7-Zip 18.05 (x86 and x64) version, but it says: "ERROR: 0.ntfs : opening : Parameter is incorrect." I also tried opening copied 0.ntfs partition (which is now file) in 7zFM (version 18.05 because 9.20 is hanging) and opening failed. Some info about file: Name: 0 Size: 989 Packed Size: 406 Host OS: Unix CRC: D6BEA98C ------------------------: Size: 989 Packed Size: 406 Folders: 0 Files: 1 CRC: D6BEA98C ------------------------: Path:...
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Thanks! It worked! However when I try this on my older drive with win xp first system partition 7-zip when opening 0.ntfs hangs (but not crash - opening for ever) and I can't cancel. I have to terminate 7-zip process. Maybe m$ messed something with one of their updates? I installed win7 on newer drive and I remember there was some update to win7 that chaneged something about reading win xp partitions. But with other partitions on that drive it works + work on win7 hdd partitions.
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Thanks! It worked! However when I try this on my older drive with win xp first system partition 7-zip when opening 0.ntfs hangs (but not crash - opening for ever) and I can't cancel. I have to terminate 7-zip process. Maybe m$ messed something with one of their updates? I installed win7 on newer drive and I remember there was some update to win7 that chaneged something about reading win xp partitions.
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Hi Igor! I have mbr formated disk and I would like to undelate some files from c: windows partition but I can't (process can't access to file used by other process). With newest 7-Zip version there is no directory "delated" and in 9.20 version there is no "PhysicalDrive0". How to undelate?
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I have mbr formated disk and I would like to undelate some files from c: windows partition but I can't (process can't access to file used by other process). With newest 7-Zip version there is no directory "delated" and in 9.20 version there is no "PhysicalDrive0". How to undelate?
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No, msi wouldn't be enough. Don't think only about yourself! You want only msi and someone other (like me) would want exe installer. Let it be as it is. It would be even better if it would be self extracting portable version (sfx).
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Yes, that is the idea of any packing/compress program like 7-Zip. You may use any extension (for example 7z, zip, xz, etc.), any level of compression, and any method of compression (LZMA, PPMd, Deflate, etc.) and compress and then uncompress file(s) should be the same as orginal file(s). If they are not - the program is buggy and you shouldn't use it. Why you just don't test this? And remember: - 7z, zip, rar can compress many files with directories - gz, bz2, xz can compress only one file (for more...
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When "list view" window is active press ctrl+a then ctrl+c and copy where you want (ctrl+v).
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When "list view" window is active press ctrl+a and ctrl+c then copy where you want (ctrl+v).
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Igor will you add bigger word sizes for 7z compression, like 512 or 1024 ?
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I manage to crash newest versions of 7-Zip x64 (7zFM 17.01-18.01) by opening some old vmlinuz images; x86 versions return error (The system cannot allocate the required amount of memory) but not crash. Previous versions (< 17.01) x86 and x64 after unpacking return error: There are some data after the end of the payload data, so are OK, I think. How to reproduce: 1. Open 7zFm and go to my vmlinuz images. 2. Open them by pressing Ctrl+PgDn and follow the biggest part of image. I include those vmlinuz...
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Hello J Schmitz. Note that you can alter/modify/destroy contents of encrypted archive...
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Igor, do you have any plans to add support for brotli compression algorithm? It looks...
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Igor do you have any plan to add support for brotli compression algorithm? It's looks...
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The same is in stable version 9.20. Was it ever otherwise?
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Home
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You can extract it in "old" style in new 7-Zip by: File > 7-Zip > Open archive >...
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You can extract 7-zip executable installer (even newest version) by 7-zip on your...
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