Changes for page Getting Started with Git

Last modified by Bastian Triller on 2013/05/21 17:24

From version 180.1
edited by Kieran Kelleher
on 2011/07/25 18:06
Change comment: There is no comment for this version
To version 206.1
edited by David Avendasora
on 2011/11/03 01:23
Change comment: There is no comment for this version

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1 -XWiki.kieran
1 +XWiki.avendasora
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7 7  ** MacOS X [[.dmg Binary Installers>>http://code.google.com/p/git-osx-installer/]]
8 8  ** Microsoft Windows [[.exe Binary Installers>>http://code.google.com/p/msysgit/]]
9 9  
10 +{{info title="Git is included with XCode 4.x"}}
11 +
12 +XCode 4.x installs a copy of git in /usr/bin/git
13 +
14 +{{/info}}
15 +
10 10  = Learn About Git =
11 11  
12 12  * Learn the concepts.
19 +** Scott Chacon (of GitHub) Video Intro [[http://www.youtube.com/watch?v=ZDR433b0HJY]]
13 13  ** [[This>>http://www.eecs.harvard.edu/~~cduan/technical/git/]] is an excellent tutorial on the basic concepts behind Git
14 -
21 +** [[Git for Computer Scientists>>http://eagain.net/articles/git-for-computer-scientists/]] gives another good view on the underlying concepts
15 15  * Learn the basics.
16 16  ** [[Everyday GIT With 20 Commands Or So>>http://www.kernel.org/pub/software/scm/git/docs/everyday.html]]
17 17  ** [[Free Online Pro Git book>>http://progit.org/book/]]
25 +*** There is even a free epub version for your iPad/iPhone [[https://github.s3.amazonaws.com/media/progit.epub]]
18 18  
19 19  * Get familiar with the reference materials available online
28 +** [[Git Community Book>>http://book.git-scm.com/]]
20 20  ** Official [[Git Documentation>>http://git-scm.com/documentation]] Site
21 21  ** Official [[Git User Manual>>http://www.kernel.org/pub/software/scm/git/docs/user-manual.html]]
22 22  ** [[Git Reference>>http://gitref.org/index.html]]
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30 30  
31 31  = Get Started with Project Wonder =
32 32  
33 -The best way to learn a new concept is to actually use it, and what better way than to do something practical like clone (checkout) the Project Wonder source code
42 +The best way to learn a new concept is to actually use it, and what better way than to do something practical like clone the Project Wonder git source code repository
34 34  
35 35  * [[Downloading Wonder>>http://wiki.objectstyle.org/confluence/display/WONDER/Getting+the+Wonder+Source+Code]] Wiki Page
36 36  
37 37  = Use Git with a Subversion Project =
38 38  
39 -OK, so you want to use Git but you are working on a team project that is hosted in a subversion repository ... and it is making you depressed :-( . Well, you can still use Git to manage your local SVN working copy and be happy again
48 +OK, so you want to use Git but you are working on a team project that is hosted in a subversion repository ... and it is making you depressed :-( . Well, you can still use Git to manage your local SVN working copy and be almost happy again (Either way, you won't be 100% happy unless the repository is a git one.)
40 40  
41 -I recommend you just use the [[git+svn protocol>>http://www.lostechies.com/blogs/derickbailey/archive/2010/02/03/branch-per-feature-how-i-manage-subversion-with-git-branches.aspx]].
50 +There are a couple ways of doing this. Two of them are:
42 42  
52 +* Follow these [[Instructions>>http://www.lostechies.com/blogs/derickbailey/archive/2010/02/03/branch-per-feature-how-i-manage-subversion-with-git-branches.aspx]] to manually set up the integration.
53 +* Use [[SourceTree>>http://itunes.apple.com/us/app/sourcetree-git-hg/id411678673?mt=12]] which can clone your SVN repository locally as a full Git repository including all historical SVN commits and their metadata.
54 +
43 43  = Git Goodies for WebObjects Developers =
44 44  
45 45  This is a list of tools that other WebObjects developers have found to be helpful. It's not a comprehensive list, and if you find things not listed here please add them
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63 63  This is really an absolute necessity and a **huge** productivity improvement. Basically you need the bash completion script from the source tarball and use your shell profile to include it whenever you open a shell. See the **Auto-Completion** section on this page:
64 64  [[Git Bash Auto-Completion>>http://progit.org/book/ch2-7.html]]
65 65  
78 +=== SourceTree by Atlassian ===
79 +
80 +SourceTree is a free Git/Mercurial GUI for OS X. A key feature is that it can use git-svn to "Clone" a SVN repository into a standard Git repository with your full SVN commit history and maintains a link back to the SVN repository. This allows you to easily use Git locally for development but still do your final commits to SVN.
81 +
82 +* [[SourceTree on AppStore>>http://itunes.apple.com/us/app/sourcetree-git-hg/id411678673?mt=12]]
83 +* [[SourceTree Home Page>>http://www.sourcetreeapp.com/]]
84 +
66 66  === GitX git GUI ===
67 67  
68 68  GitX is an awesome FREE history viewer made for OS X. It is a better way to visualize your branch and commit history of your git repository. However, power users (aka "cool kids") will probably only use it for history viewing while they continue to use the terminal command line for checkouts, branching, staging, rebasing and committing.
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107 107  
108 108  What if one wants to generate a pull request the origin and also push to a fork? You would do this if you were not a Wonder committer but wanted to share code. You organize your changes in your local repository/branch and, from the clean repository or branch, generate the pull request and, separately, push the changes to your fork.
109 109  
110 -=== Versions? or Diffs? ===
129 +=== Testing a Pull-Request ===
111 111  
112 -One satori that I had while speaking to my git guru (thanks, Kieran) is this. Subversion is all about versions. CVS was all about versions. We have been working with these a long time and the ideas are sticky. Git is //not// about versions. It is about diffs. Diffs are the main thing. If you think about it, this makes sense. You have thoughts and make changes and those diffs are the product of your work. If you get those diffs into something, that is good, but the work product was the diffs.
131 +It may not be obvious how to do this. If one is a committer, there is a button one can push to automatically accept a pull-request. But is this really a safe thing to do? But how can you get the diffs being suggested? It seems more complicated than it needs to be to merge the branch the pull-request was made from. One can actually use a URL that specifies just the diff. If the pull-request is at [[https://github.com/projectwonder/wonder/pull/43]], one can do:
113 113  
114 -All this rebasing and such may seem odd. But the main thing is the diffs. I have edits from a two-week old repository. What do I do? I move the diffs so that they are diffs from the latest code. That is a rebase. When we make edits, we are used to being over-concerned about merge conflicts. But they do not happen all that often and are actually easy to deal with when they do, if the tools are oriented to making them easy to deal with. If we are worrying about the versions and not the diffs, we are paying attention to the paper we write on and not to the words we are putting down.
133 +{{code}}
134 +curl 'https://github.com/projectwonder/wonder/pull/43.patch' | git am
135 +{{/code}}
115 115  
116 -Internally, git keeps track of text fragments and not files. Why is this? Because the versions are not the point. The diffs are. I can imagine how Linus Torvalds had this idea. He was looking at all the versions of all the files in Linux and all the e-mails of all the diffs. These are two separate worlds. It is conceptually painful to look at every diff, find its source and see how it maps to what now exists. At some point, he must have realized that all he needed was the e-mails. If he had no files any longer, but all the e-mails, he could always reconstruct the files. He would not have to make the conceptual switch from the diffs to the versions and back. Collectively, those e-mails with the diffs defined everything that needed to be said. Quod erat demonstrandum.
137 +The curl fetches the diff. Take off the "git am" to just see the diffs. The "git am" merges the diffs. Then you may build and test the pull-request. A normal push will push the code into the repository.
117 117  
118 118  === How Easy Are Branches? ===
119 119  
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123 123  
124 124  Keep in mind that the difficult part of what you do should be the thinking. Git makes it easy to organize and share your thoughts as branches. Your local copies may be messy or not. They are the thoughts you have in your head and lots of those thoughts will stay there and never see the light of day and that is ok. But when you have clarified your thoughts, git will make it easy to share them.
125 125  
147 +=== Finding the List of All Git Commands ===
148 +
149 +The "git help" command gives one the list of commonly used git commands. How does one find the others, since some of them turn out to be very useful? I tried "git help v". That was wrong. It would have been better to try "git help help", but this did tell me about the -all flag, which actually lists out all of the commands, and there are quite a few of them. So, good hunting.
150 +
126 126  = Git Everyday Tasks =
127 127  
128 128  === How to revert? ===
129 129  
130 -Reverting is easy. The following command removes all modifications to files in your wqorking copy and brings them back to the HEAD.
155 +Reverting is easy. The following command removes all modifications to files in your working copy and brings them back to the HEAD.
131 131  
132 132  {{code}}
133 133