![]() These files are the resource file within the exe, and 7-zip reported the file type is PE, so I guess it is acting like resource hacker and shows the resource files? But not all exe files can be opened in this way, why? And when I opened the Open VPN Installer, the file content is like: $PLUGINSDIRĪnd this is basically what I will get after installation except those $ folders. ![]() But if I open the VirtualBox Installer using 7-zip, the file content is like. What's more confusing: I've found that an ISO file can be decompressed using 7-zip, but the 7-zip says it can handle that file type, so it's fine. ![]() And how does 7-zip determine this file type? Shouldn't the. exe file like AMD's driver installer using 7-zip, it still can open the file and the contents are showing correctly. The problem is: if I open a self-extracting executable. zip is a zip file, and without extension there are some magic bits or MIME type that can be used to determine the file type. I'm a little bit confusing about how does zip and unzip software identity whether the file its opening is a zip file or not.ĪFAIK, a program can identify a file with extension.
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