Dev Stack Source

Answer : The ZIP format doesn't allow for encrypting file lists. This means that file lists are viewable by anyone. Only the contents of the files is encrypted, which means that no one can read the file without your password. Due to this, 7-Zip only asks for your password before unzipping. If you need a format that encrypts the file list, use 7Z and make sure you check "Encrypt File Names". For the more technical minded, the ZIP specification doesn't allow for encryption of the Central Directory. You will be prompted for a password when you try to extract the files. To simply view the contents of the archive does not require a password. If you would like to obfuscate the contents of the archive, compress the directory into an archive, and then compress that archive with a password. Thus, you will have to extract the archive with a password, to pull out the archived (and obfuscated) contents. A generalized solution that works for all zip programs (WI...

Answer : By nature if you want the file to be encrypted, it needs to be unpacked and repacked, since the whole archive needs to be encrypted with the password. Would it work for you to zip the zip file? Use no/low compression and encrypt the original zip file. Its a lot quicker than repacking the original files.

Answer : Using the run command: ( WIN + R ) type "%TEMP%" and hit enter. This will bring up all the temp files stored on your PC through the user account you are on. 7-zip tells you the temp location it uses (extract from 7-zip.org/faq.html): 7-Zip doesn't know folder path of drop target. Only Windows Explorer knows exact drop target. And Windows Explorer needs files (drag source) as decompressed files on disk. So 7-Zip extracts files from archive to temp folder and then 7-Zip notifies Windows Explorer about paths of these temp files. Then Windows Explorer copies these files to drop target folder. To avoid temp file usage, you can use Extract command of 7-Zip or drag-and-drop from 7-Zip to 7-Zip. C:\Users\xxxxx\AppData\Local\Temp under windows 8.1 found MANY 7zipExxxx.tmp folders ...using up 16GB ! reboot did NOT help. Using CCleaner did NOT help. Manually looking at TEMP folders did NOT help. What I did was use WinDirStat to see all m...

Answer : 7-Zip does not have an explicit "quiet" or "silent" mode for command line extraction. A similar question over at Stack Overflow, Extracting a 7-Zip file "silently" - command line option , gives a possible solution using Python scripting code: One possibility would be to spawn the child process with popen, so its output will come back to the parent to be processed/displayed (if desired) or else completely ignored (create your popen object with stdout=PIPE and stderr=PIPE to be able to retrieve the output from the child). And then a similar question here on Super User, Redirect 7-Zip's command-line output to /dev/null on Windows when extracting a .7z file reports that the issue is mostly the output, and that by sending the output to NULL, you make the system run essentially silent: Try doing this: %COMSPEC% /c "%ProgramFiles%\7-Zip\7z.exe" ... Yes, it does support command line use. Open a command prompt and n...