Changes for page Git

Last modified by Richard Kreissig on 2025/01/30 12:03
<
From version < 18.1 >
edited by cds
on 2012/10/15 11:19
To version < 26.1 >
edited by msp
on 2012/10/15 14:53
>
Change comment: There is no comment for this version

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Author
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1 -XWiki.cds
1 +XWiki.msp
Content
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1 -This tutorial will address the source code management (SCM) tool named [[Git>>url:http://git-scm.com/||shape="rect"]].
1 +This tutorial will address the source code management (SCM) tool named [[Git>>url:http://git-scm.com/||shape="rect"]]. By following these steps you should learn about the basic usage of Git, which is required for the whole practical course. Furthermore, Git is a great SCM tool, and it's good to know how to use it. During this tutorial, we will follow Alan Turing's thoughts towards developing the [[Turing Machine>>url:http://en.wikipedia.org/wiki/Turing_machine||shape="rect"]].
2 2  
3 -= Repositories and Commits =
3 + More in-depth documentation can be found on the [[official home page>>url:http://git-scm.com/documentation||shape="rect"]], which mentions books, videos, and links to other tutorials and references.
4 4  
5 -{{task-list}}
6 -{{task id="1" status="complete"}}
7 -test1
8 -{{/task}}
5 += Creating Commits =
9 9  
10 -{{task id="2" status="incomplete"}}
11 -test2
12 -{{/task}}
7 +1. Read the [[Git for Computer Scientists>>url:http://eagain.net/articles/git-for-computer-scientists/||shape="rect"]] introduction (skip this if you are already familiar with Git).
8 +1. For Linux, Git is available in its own package. Windows users can install [[msysGit>>url:http://msysgit.github.com/||shape="rect"]]. For MacOS, Git is available as part of [[Xcode>>url:https://developer.apple.com/xcode/||shape="rect"]]; if you cannot install that, use [[Git for OSX>>url:http://code.google.com/p/git-osx-installer/||shape="rect"]].
9 +1. (((
10 +Create a local repository for the "//Turing Project//":
13 13  
14 -{{task id="3" status="incomplete"}}
15 -test 3
16 -{{/task}}
17 -{{/task-list}}
12 +{{noformat}}
13 +$ mkdir turing
14 +$ cd turing
15 +$ git init
16 +Initialized empty Git repository in ~/turing/.git/
17 +{{/noformat}}
18 +)))
19 +1. (((
20 +Add some content: copy [[attach:notes.txt]]{{code language="none"}}{{/code}} to your {{code language="none"}}turing{{/code}} directory.
18 18  
19 -\\
22 +{{noformat}}
23 +$ git add notes.txt
24 +$ git commit -m "wrote some first notes"
25 +[master (root-commit) 2e73b34] wrote some first notes
26 + 1 files changed, 5 insertions(+), 0 deletions(-)
27 + create mode 100644 notes.txt
28 +{{/noformat}}
29 +)))
30 +1. Edit {{code language="none"}}notes.txt{{/code}}:\\
31 +11. Replace "fixed" with "infinite" in line 1.
32 +11. Replace "... (TODO)" with "a finite state machine" in line 4.
33 +1. (((
34 +Commit the modified content to your local repository:
35 +
36 +{{noformat}}
37 +$ git add notes.txt
38 +$ git commit -m "modified tape length, found a controller for tape head"
39 +[master 3f28a0e] modified tape length, found a controller for tape head
40 + 1 files changed, 2 insertions(+), 2 deletions(-)
41 +{{/noformat}}
42 +)))
43 +
44 +After the preceding steps you have two commits in your local repository, each with one file in the index. You have different commands for viewing these commits:
45 +
46 +{{noformat}}
47 +$ git log
48 +commit 3f28a0e473bf3da4aff34a09fed838fe033f3bb5
49 +Author: Miro Spoenemann <msp@informatik.uni-kiel.de>
50 +Date: Mon Oct 15 14:30:24 2012 +0200
51 +
52 + modified tape length, found a controller for tape head
53 +
54 +commit 2e73b34ac44480773fc0e52875b7353a087d8c6d
55 +Author: Miro Spoenemann <msp@informatik.uni-kiel.de>
56 +Date: Mon Oct 15 12:14:06 2012 +0200
57 +
58 + wrote some first notes
59 + 
60 +$ git show 3f28a0e
61 +commit 3f28a0e473bf3da4aff34a09fed838fe033f3bb5
62 +Author: Miro Spoenemann <msp@informatik.uni-kiel.de>
63 +Date: Mon Oct 15 14:30:24 2012 +0200
64 +
65 + modified tape length, found a controller for tape head
66 +
67 +diff --git a/notes.txt b/notes.txt
68 +index 4ded2b3..bd422b3 100644
69 +--- a/notes.txt
70 ++++ b/notes.txt
71 +@@ -1,5 +1,5 @@
72 +- * A tape with fixed length
73 ++ * A tape with infinite length
74 + * Tape head can read or write data
75 + * Tape head can move left or right
76 +- * The head is controlled by ... (TODO)
77 ++ * The head is controlled by a finite state machine
78 +{{/noformat}}
79 +
80 +Note that each commit is identified by a looong hash value, but it is possible to use only a prefix when referencing them (if the prefix is not ambiguous): the example above uses {{code language="none"}}3f28a0e{{/code}} to identify the second commit. Also try the command {{code language="none"}}gitk{{/code}} to get an overview of your commits (a better alternative available for MacOS is [[GitX>>url:http://gitx.frim.nl/||shape="rect"]]).
Confluence.Code.ConfluencePageClass[0]
Id
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1 -2982102
1 +2982120
URL
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1 -https://rtsys.informatik.uni-kiel.de/confluence//wiki/spaces/WS12EclPract/pages/2982102/Git
1 +https://rtsys.informatik.uni-kiel.de/confluence//wiki/spaces/WS12EclPract/pages/2982120/Git

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