7za.exe Error Cannot Open File As Archive
Contents |
A free file archiver for extremely high compression Brought to you by: ipavlov Summary Files Reviews Support Wiki Tickets ▾ Patches Bugs Feature Requests News Discussion Create Topic Stats Graph error cannot open file as archive 7z Forums Help 4234 Open Discussion 12541 Help Formatting Help 7z.exe can notopern file 7zip error cannot open file as archive as archive Forum: Open Discussion Creator: tadan Created: 2008-01-15 Updated: 2012-12-07 tadan - 2008-01-15 Hi all I've a problem 7 zip error cannot open file as archive using command line if I try to extract an archive like this: 7z.exe x -y -o c:\myfolder\myfile.zip c:\unzipped I have this error on display "Can not open file as archive" IF I
Cannot Open File As Archive 7zip
try to unzip the file via file manager works 100%, using iwnzip or the unzip procedure included in win xp works 100% ... wazzup ? :-((((((((((((((((((((((((((((((((((((((( I've a zip and I would like to extract in a specified path ... if path doesen't exits, automatically created please response me soon as possible I've stoppend my works for this :-(((((((((((((((((( Manty thanks SeeYa Francesco cannot open file as archive rar If you would like to refer to this comment somewhere else in this project, copy and paste the following link: SeldomGood - 2008-01-15 Ahem... pay attention to the order of things... 7z.exe x -y c:\myfolder\myfile.zip -oc:\unzipped this should work. If you would like to refer to this comment somewhere else in this project, copy and paste the following link: tadan - 2008-01-16 Hi Bon-De-Rado I've verified the sytanx like you suggest ... this is the first problem! But I've also verified the .zip file ... well this file is made under linux ... there are some problems when I create the zip including eventually subfolders. If I create a simply zip with some files, 7z works 100%. So, the second problem is the creation of the .zip file. Mant thanks for you're post and you're help :-) See Ya Francesco from Italy If you would like to refer to this comment somewhere else in this project, copy and paste the following link: Muhammad Arsyad - 2008-05-27 Hi, I am getting this error too. Running it on Windows XP SP2. I tried unzipping from the command line this way: c:\test
alpha or beta version. If new version also doesn't help, read this manual. Required software: 7-Zip (latest version, that can be stable, alpha or beta version). Some program with hex viewer or editor, for example, FAR Manager. 7z archive repair 7z file structure 7z archive consists of 4 main blocks of data: Start Header (32 bytes): it contains
Cannot Open File As Archive Fix
signature and link to End Header Compressed Data of files Compressed Metadata Block for files: it contains links to Compressed Data, information about compression
7zip Command Line
methods, CRC, file names, sizes, timestamps and so on. End Header: it contains link to Compressed Metadata Block. Note: If 7z archive contains only one file without encryption, 7-Zip stores Metadata for that file in End Header in uncompressed form, http://sourceforge.net/forum/message.php?msg_id=7566954 and there are only 3 main blocks in that case. Archive example Archive example: a.7z (3740 bytes) that contains 5 files compressed with LZMA method. Start of archive: 0000000000: 37 7A BC AF 27 1C 00 04 5B 38 BE F9 59 0E 00 00 0000000010: 00 00 00 00 23 00 00 00 00 00 00 00 7A 63 68 FD 0000000020: 00 21 16 89 6C 71 3D AB 7D 89 E6 3C 2E BE 60 24 00: 6 http://www.7-zip.org/recover.html bytes: 37 7A BC AF 27 1C - Signature 06: 2 bytes: 00 04 - Format version 08: 4 bytes: 5B 38 BE F9 - CRC of the following 12 bytes 0C: 8 bytes: 59 0E 00 00 00 00 00 00 - relative offset of End Header 14: 8 bytes: 23 00 00 00 00 00 00 00 - the length of End Header 1C: 4 bytes: 7A 63 68 FD - CRC of the End Header Relative offset of End Header is relative from the end of Start Header, that is at offset 0x20 (32 in decimal). Real offset of End Header in example archive = 0x20 + 0x0E59 = 0x0E79 20: 00 21 16 89 ... - start of compressed data. Note: if the file was compressed with LZMA method, the first byte is always 00. If first byte is not 00, then archive uses another method (it can be LZMA2 or encrypted data with AES). End of archive: End Header (offset = 0x0E59, length = 0x23): 0000000E70: 17 06 8D AD 01 09 80 0000000E80: AC 00 07 0B 01 00 01 23 03 01 01 05 5D 00 10 00 0000000E90: 00 0C 81 1A 0A 01 3C 70 52 F7 00 00 Possible values for first byte in End Header: 17 - End Header contains the link to Metadata Block. 01 - Metadata block is stored in End Header. Corruption types There are s
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the http://stackoverflow.com/questions/11567923/c-sharp-create-7z-archive-then-can-not-open-file-name-7z-as-an-archive company Business Learn more about hiring developers or posting ads with us Stack Overflow http://superuser.com/questions/519114/how-to-write-error-status-for-command-line-7-zip-in-variable-or-instead-in-te Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up c# create 7z archive, then Can not open file “name.7z” as an archive up vote 0 down vote favorite cannot open I am trying to zip some folders. They have different paths, will not belong to the same directory. I tested the command line arguments that I would give, and it works, but I can't get it to work from c#: string destination = "some path\\name.7z"; string pathToZip = "path to zip\\7z.exe"; // or 7za.exe ProcessStartInfo p = new ProcessStartInfo(); p.FileName = pathToZip; p.Arguments = "a \"" + destination + "\" \""; // room cannot open file for the foreach - but even one directory doesn't work right now p.Arguments += directoryPath + "\" \""; p.Arguments += "\" -mx=9 -aoa"; Process x = Process.Start(p); With 7z.exe i get a blink; With 7za.exe, I get the typical command-line zip sequence, with files zipping through, adding to archive, and an archive gets created. Then I go to it and right-click, open or double-click... and I get that it is an invalid archive (Can not open file "name.7z" as an archive). Try command line, with 7za, to extract - same thing. Edit: I found the solution: My problem was the -aoa option (which I used for overwrite) - after removing it, it worked. c# archive 7zip share|improve this question edited Aug 16 '12 at 19:43 asked Jul 19 '12 at 19:27 Thalia 2,80273384 2 Whatever you're doing with p.Arguments sucks somehow and no human can read that without getting internal eye bleeds! –banging Jul 19 '12 at 19:31 1 Agreed. I recommend StringBuilder here, since you're doing string concatenation inside a for/foreach loop. –neontapir Jul 19 '12 at 19:42 add a comment| 3 Answers 3 active oldest votes up vote 1 down vote accepted This code works for me, packs a directory with files within: string destination = @"c:\my test.7z"; string pathToZip = @"C:\Program Files\7-Zi
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How to write error status for command line 7-zip in variable (or, instead, in text file) up vote 5 down vote favorite 4 I use 7-zip (in my batch files) to pack some directory and send archive by email. When I use some file in this directory at the same time the batch file is running (I start the batch files with Task Scheduler), I see warning messages in process. After this, when the archive is ready, 7-zip displays a message like this: "WARNING: Cannot open 29 files" before sending the email. When this happens, I want to be able to set an environment variable (something like %MESSAGE%) with the value "29 warnings in progress" and to put this message in the subject of the email. But all that can do right now is use the %ERRORLEVEL% variable. If I can't set a %MESSAGE% variable, is it possible to write warning messages to a file, then parse this file to extract the last line? command-line batch 7-zip share|improve this question edited Jan 22 '13 at 21:13 cpast 1,97411023 asked Dec 13 '12 at 22:50 slesar.mira 28113 add a comment| 2 Answers 2 active oldest votes up vote 6 down vote accepted I suggest you use the 7-Zip Command Line Version (7za.exe). A command like the following will redirect all output (including from stderr) to Log.txt: 7za a Test.7z *.* >Log.txt 2>&1 Additionally, 7-Zip returns the following exit codes which you can use in your batch file with %ERRORLEVEL%: 0 = No error. 1 = Warning (Non fatal error(s)). For example, one or more files were locked by some other application, so they were not compressed. 2 = Fatal error. 7 = Command line error. 8 = Not enough memory for operation. 255 = User stopped the process. Edit: If you don't want such a verbose log containing all those Compressing