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java,version control,tips and tricks

Useful SVN Commands

I have been increasingly using command line SVN these days. Find it's just a bit quicker and more reliable than the GUI clients I had been using. I've mainly written this for myself, as a quick reference for the commands I use most frequently

svn help COMMAND
  • Displays help for a particular svn command.
  • Lists all available commands if none is specified

svn co URL[@REV]
  • Check out: Creates a local working copy of the repository found at the URL

svn log
  • Provides a log of commit messages
  • Use with -l 10 to limit to 10 most recent messages
  • Use -v for verbose output (lists changed files)
  • Use -r 12345 to get info on particular revision

svn info
  • Provides useful information about the current working copy, such as repository URL, and current revision

svn status
  • Provides a list of diffences between the working copy, and the repostory. Take a look at the help (svn help status to find out what the different column values mean)

svn diff
  • Displays local modifications
  • Use -r N:M to display differences between two revisions
  • Use -c to see the changes for a particular revision

svn revert PATH
  • Reverts the specified path to the contents of the repository. You will lost any local changes!
  • Not recursive by default, use -R to make recursive

svn add PATH
  • Adds the specified path the version control.
  • Note, this doesn't add the file to the repository yet, that doesn't happen till you commit.

svn copy SRC[@REV] DEST
  • Copies something from SRC to DEST.
  • SRC and DEST can both be either working copies paths, or URLS.
  • Usual usage would be WC -> WC, or URL -> URL.
  • URL -> URL is used for branching and tagging

svn delete TARGET
  • Deletes a file.
  • If TARGET is a working copy path, the file is scheduled for deletion on the next commit
  • If TARGET is a repository URL, it immediately deletes the file from the repository.

svn move SRC DST
  • Moves a the specified target.
  • Equivalent of a copy then a delete
  • Maintains history on the moved file.

svn commit -m MESSAGE
  • Commits the working copy changes to the repository

svn list TARGET
  • Provied a directory listing for the specified folder in the repository

svn mkdir TARGET
  • Creates a directory
  • TARGET can be working copy path or repository URL

svn merge -r N:M SOURCE@REV
  • Merges the range of revisions starting at N and ending at M from SOURCE into the current working copy
  • If N > M then it is a reverse merge, and can be used to undo the differences between N and M
  • Typically used to catch up a feature branch
  • Can use -c option to pick a single revision
  • Can supply multiple -c and -r options to cherry pick revisions

svn merge --reintegrate SOURCE@REV
  • Used to reintegrate a branch into it's parent branch
  • Working copy should be the parent branch (often trunk)
  • A branch cannot be reintegrated twice, so good practice to delete the branch afterwads
svn blame TARGET@REV
  • Outputs target, with author names, and revision numbers attached to changes
  • Use to see who broke what.

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