By Ben Lynn

Ben Lynn, "Git Magic"
Cre teSpace | 2010 | ISBN: 1451523343 | sixty four pages | PDF | 0,3 MB

Git is a model regulate Swiss military knife. a competent flexible multipurpose revision regulate device whose outstanding flexibility makes it tough to profit, not to mention grasp. As Arthur C. Clarke saw, any sufficiently complicated know-how is indistinguishable from magic. this can be a good way to strategy Git: novices can forget about its internal workings and look at Git as a gizmo which can amaze associates and infuriate enemies with its wondrous talents. instead of describe one mysterious command after one other, we offer recipes for ordinary workflows. After repeated use, you'll necessarily achieve talent with Git.

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8. Personal Experience In a centralized version control system, history modification is a difficult operation, and only available to administrators. Cloning, branching, and merging are impossible without network communication. So are basic operations such as browsing history, or committing a change. In some systems, users require network connectivity just to view their own changes or open a file for editing. Centralized systems preclude working offline, and need more expensive network infrastructure, especially as the number of developers grows.

2. One can discover who else is working on the file by asking the central server who has marked it for editing. With appropriate scripting, you can achieve the same with Git. This requires cooperation from the programmer, who should execute particular scripts when editing a file. 5. File History Since Git records project-wide changes, reconstructing the history of a single file requires more work than in version control systems that track individual files. The penalty is typically slight, and well worth having as other operations are incredibly efficient.

Perhaps I left my credit card number in a text file and accidentally added it to the project. Deleting the file is insufficient, for the file can be accessed from older commits. We must remove the file from all commits: $ git filter-branch --tree-filter ’rm top/secret/file’ HEAD See git help filter-branch, which discusses this example and gives a faster method. In general, filter-branch lets you alter large sections of history with a single command. git/refs/original directory describes the state of affairs before the operation.

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