The Ten Minute Guide to diff and patch. Situation one: you are trying to compile a package from source and you discover that somebody has already done the work for you of modifying it slightly to compile on your system. They have made their work available as a "patch", but you're not sure how to make use of it. The answer is that you apply the patch to the original source code with a command line tool called, appropriately, patch. Situation two: you have downloaded the source code to an open source package and after an hour or so of minor edits, you manage to make it compile on your system.
You would like to make your work available to other programmers, or to the authors of the package, without redistributing the entire modified package. Now you are in a situation where you need to create a patch of your own, and the tool you need is diff. This is a quick guide to diff and patch which will help you in these situations by describing the tools as they are most commonly used. Applying patches with patch patch < foo.patch. Applying / Merging Changes From One Git Repository To Another | factor[e] design initiative. Applying / Merging Changes From One Git Repository To Another This tutorial demonstrates how to apply changes made to a project hosted in one git repository onto a completely separate project in a different git repository: essentially, merging changes between two totally separate git repositories.
If you don't use git, this will likely not interest you much. Consider two projects that are both managed with git that do not share a commit history of any kind, i.e., one is not a branch of the other. It may be the case, however, that in real life they have a common ancestry. For example, if you have a project in git that you copy into a new git repository, you will end up with two projects that as far as git is concerned are totally separate. When changes are made in one repository, you may want an easy way to transfer them from that repository to the other, similarly to the way in which you merge changes from one branch to another. Start by going to your source project's directory. Git log. Five advanced Git merge techniques : Inside 245s. Have you ever performed a merge in Git and not have it quite turn out the way you wanted it to? For example, you accidentally converted all of your UNIX line endings to DOS line endings, and now the entire file reports a conflict?
Maybe you see a conflict that you don't really care about resolving, and want to resolve as theirs? Or perhaps the conflicted file is empty and you can't figure out just what happened there? Here are some advanced techniques you can apply to your conflicted merges to make things go a little easier. Turn diff3 conflicts using git config --global merge.conflictstyle diff3. Subversion 1.5 merge-tracking in a nutshell @ iBanjo. As I’ve mentioned in other posts, the Subversion project is on the verge of releasing version 1.5, a culmination of nearly two years of work. The release is jam-packed with some huge new features, but the one everyone’s excited about is “merge tracking”. Merge-tracking is when your version control system keeps track of how lines of development (branches) diverge and re-form together. Historically, open source tools such as CVS and Subversion haven’t done this at all; they’ve relied on “advanced” users carefully examining history and typing arcane commands with just the right arguments.
Branching and merging is possible, but it sure ain’t easy. Of course, distributed version control systems have now started to remove the fear and paranoia around branching and merging—they’re actually designed around merging as a core competency. While Subversion 1.5 doesn’t make it merging as easy as a system like Git or Mercurial, it certainly solves common points of pain. How to create and use a patch in Linux. Создание патч-файла: diff -Naur olddir newdir > new-patch - или - diff -Naur oldfile newfile >new-patch Примечание, касающееся патча и используемой глубины вложенных каталогов: При создании патч-файла постарайтесь убедиться, что глубина вложенных каталогов одинакова для имени пути старой и новой директории патча.
Для примера: --- old/modules/pcitable Mon Sep 27 11:03:56 1999 new/modules/pcitable Tue Dec 19 20:05:41 2000 Вышеуказанное будет хорошо работать с командой diff как патч. --- old/try1/other/modules/pcitable Mon Sep 27 11:03:56 1999 new/modules/pcitable Tue Dec 19 20:05:41 2000 Возможны проблемы при формировании патча с помощью команды diff и вышеуказанных строк. Использование команды Patch: patch -p0 <new-patch patch -p1 <new-patch Какую из приведённых выше команд patch Вам использовать зависит от Вашей текущей рабочей директории. Cat new-patch | patch -p0 Другая методика вызова команды patch - использование "here document": Уровни в команде Patch (-p0 или -p1?) Применение команды Patch: