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| <h3>Setting up Git</h3>
| | __NOINDEX__ |
| | | {{warning| This page is obsolete. Proceed to [[Development/Git]].}} |
| First, we will start with a new Git repository and add one file to it.
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| <pre>
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| carsten@moinmoin:~/git> git init
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| Initialized empty Git repository in .git/
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| carsten@moinmoin:~/git> echo "Test content" > testfile
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| </pre>
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| Now we will check the status of the repository. Git will list one untracked file, that means the file has not yet been added to the repository.
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| <pre>
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| carsten@moinmoin:~/git> git status
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| # On branch master
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| #
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| # Initial commit
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| #
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| # Untracked files:
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| # (use "git add <file>..." to include in what will be committed)
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| #
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| # testfile
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| nothing added to commit but untracked files present (use "git add" to track)
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| </pre>
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| In the next three commands the file 'testfile' will be added and commited. Then Git will check the status again.
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| <pre>
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| carsten@moinmoin:~/git> git add testfile
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| carsten@moinmoin:~/git> git commit
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| Created initial commit 246d7aa: This is the first commit
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| 1 files changed, 1 insertions(+), 0 deletions(-)
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| create mode 100644 testfile
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| carsten@moinmoin:~/git> git status
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| # On branch master
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| nothing to commit (working directory clean)
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| </pre>
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| Ok, as you can see the file has been commited. Now let's see what we change the contents of the file:
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| <pre>
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| carsten@moinmoin:~/git> echo "new content" > testfile
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| carsten@moinmoin:~/git> git status
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| # On branch master
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| # Changed but not updated:
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| # (use "git add <file>..." to update what will be committed)
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| #
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| # modified: testfile
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| #
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| no changes added to commit (use "git add" and/or "git commit -a")
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| carsten@moinmoin:~/git> git commit -a
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| Created commit 14a9802: Second commit
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| 1 files changed, 1 insertions(+), 1 deletions(-)
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| </pre>
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| You see that Git noticed the changes in the file. "git-commit -a" commits all changes in the repository.
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| <h3>Branches are cheap in Git</h3>
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| <i>git-branch</i> shows you the branches of the repository, the one with the '*' is the active one. So let us create a new branch called <i>"bugfix-branch"</i> and assume we want to fix a branch there. After this fix (in this case the new file) we will merge back all the hard work into the master branch.
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| <pre>
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| carsten@moinmoin:~/git> git-branch
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| * master
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| carsten@moinmoin:~/git> git branch bugfix-branch
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| carsten@moinmoin:~/git> git checkout bugfix-branch
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| Switched to branch "bugfix-branch"
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| carsten@moinmoin:~/git> git branch
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| * bugfix-branch
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| master
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| carsten@moinmoin:~/git> echo "a second file" > newfile
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| carsten@moinmoin:~/git> git commit -a
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| # On branch bugfix-branch
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| # Untracked files:
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| # (use "git add <file>..." to include in what will be committed)
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| #
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| # newfile
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| nothing added to commit but untracked files present (use "git add" to track)
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| carsten@moinmoin:~/git> git add newfile
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| carsten@moinmoin:~/git> git commit -a
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| Created commit 3264357: This file is here for a demonstration of Gits branch- and merge feature
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| 1 files changed, 1 insertions(+), 0 deletions(-)
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| create mode 100644 newfile
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| </pre>
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| Ok, the bug is fixed now. Next step: Checkout the master branch and merge the two branches:
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| <pre>
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| carsten@moinmoin:~/git> git checkout master
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| Switched to branch "master"
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| carsten@moinmoin:~/git> ls
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| testfile
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| carsten@moinmoin:~/git> git merge bugfix-branch
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| Updating 14a9802..3264357
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| Fast forward
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| newfile | 1 +
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| 1 files changed, 1 insertions(+), 0 deletions(-)
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| create mode 100644 newfile
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| carsten@moinmoin:~/git> ls
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| newfile testfile
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| </pre>
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| <h3>Lets now have a look at the log of the testfile</h3>
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| <pre>
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| carsten@moinmoin:~/git> git log testfile
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| commit 14a9802e249413003d1fa40002baa025aa54c75f
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| Author: Carsten Niehaus <carsten@moinmoin.site>
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| Date: Fri Apr 18 18:07:18 2008 +0200
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| Second commit
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| commit 246d7aad05139314e7ff62a5becb6c930f72fb8f
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| Author: Carsten Niehaus <carsten@moinmoin.site>
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| Date: Fri Apr 18 18:06:33 2008 +0200
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| This is the first commit
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| </pre>
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