# Repeatable Extraction 3 messages from 2016-09-28 to 2016-10-04. Participants: chris king, Dennis Kaarsemaker, Johannes Schindelin. Thread: https://gitlist.dev/t/44179 ## chris king, 2016-09-28 03:14 Subject: Repeatable Extraction Message-ID: URL: https://gitlist.dev/e/CAJQwtsidixAAJKp7-b2PmXgs%3DmS%2BPbT5ebOmKLJU1nEn7UJ2og%40mail.gmail.com ``` Hello, first off thanks for such a wonderful tool! I have a general question and I hope this is an appropriate spot to ask it. Is there a way automate extraction that will repeatably generate the same files? Currently, each time I extract git portable many of the binaries change slightly. For example, if I extract twice using PortableGit-2.10.0-32-bit.7z.exe -y -gm2 then Beyond Compare tells me that many of the files in usr\bin have changed at offset 0x88 and 0x89. Why is that? Warm regards, Chris ``` ## Dennis Kaarsemaker, 2016-09-28 06:49 Subject: Re: Repeatable Extraction Message-ID: <1475045345.7623.26.camel@kaarsemaker.net> URL: https://gitlist.dev/e/1475045345.7623.26.camel%40kaarsemaker.net In-Reply-To: ``` On di, 2016-09-27 at 20:14 -0700, chris king wrote: > Hello, first off thanks for such a wonderful tool! I have a general > question and I hope this is an appropriate spot to ask it. > > Is there a way automate extraction that will repeatably generate the > same files? Currently, each time I extract git portable many of the > binaries change slightly. For example, if I extract twice using > >     PortableGit-2.10.0-32-bit.7z.exe -y -gm2 > > then Beyond Compare tells me that many of the files in usr\bin have > changed at offset 0x88 and 0x89. Why is that? Hi Chris, That file is specific to the git for windows project, not git itself. While you may be able to find somebody on the git@vger mailinglist who knows the answer, git for windows also has a separate mailinglist at https://groups.google.com/forum/#!forum/git-for-windows and a chat room at https://gitter.im/git-for-windows/git -- these may be of more assistance in this case. -- Dennis Kaarsemaker http://www.kaarsemaker.net ``` ## Johannes Schindelin, 2016-10-04 10:25 Subject: Re: Repeatable Extraction Message-ID: URL: https://gitlist.dev/e/alpine.DEB.2.20.1610041223010.35196%40virtualbox In-Reply-To: ``` Hi Chris, On Tue, 27 Sep 2016, chris king wrote: > Is there a way automate extraction that will repeatably generate the > same files? Currently, each time I extract git portable many of the > binaries change slightly. For example, if I extract twice using > > PortableGit-2.10.0-32-bit.7z.exe -y -gm2 > > then Beyond Compare tells me that many of the files in usr\bin have > changed at offset 0x88 and 0x89. Why is that? The reason is that you look at 32-bit, where technical limitations force us to hard-code a certain base address for all of the includede MSYS2 .dll files (i.e. all libraries that require, or implement, the POSIX emulation layer called MSYS2). To avoid clashes with other .dll files, that base address is adjusted via the post-install.bat script for your particular environment. If you want to avoid that, you will have to extract the installer via 7-Zip: it is a self-extracting .7z archive (and the self-extractor automatically executes post-install.bat, which subsequently deletes itself). Ciao, Johannes ```