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| <body> |
| |
| <h1>CVS to SVN Crossover Guide</h1> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2>Purpose</h2> |
| |
| <p>This document provides an alternate method of learning Subversion. |
| Many users dislike learning new technology via a theoretical "top |
| down" approach, as provided by the <a |
| href="http://svnbook.red-bean.com">Subversion Book</a>. Instead, |
| this document presents Subversion from the "bottom up": it shows a |
| CVS command or task, and then shows the equivalent task in |
| Subversion (along with relevant book links.) It's essentially a |
| re-indexing of topics covered by the book, keyed on CVS tasks.</p> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2>Table of Contents</h2> |
| |
| <h3>Setup</h3> |
| <ul> |
| <li><a href="#repos_creation">Repository creation</a></li> |
| <li><a href="#import">Importing data</a></li> |
| <li><a href="#installing">Installing a server</a></li> |
| <li><a href="#authenticating">Authenticating to a server</a></li> |
| <li><a href="#browsing">Browsing a repository</a></li> |
| <li><a href="#checkingout">Checking out a working copy</a></li> |
| </ul> |
| |
| <h3>Basic Work Cycle</h3> |
| <ul> |
| <li><a href="#changeditems">Seeing locally changed items</a></li> |
| <li><a href="#outofdate">Seeing out-of-date items</a></li> |
| <li><a href="#scheduling">Scheduling additions or deletions</a></li> |
| <li><a href="#copying">Copying and moving</a></li> |
| <li>Undoing local changes</li> |
| <li>Updating and committing</li> |
| <li>Resolving conflicts</li> |
| <li>Adding a binary file</li> |
| <li>Using native line-endings</li> |
| </ul> |
| |
| <h3>Examining history</h3> |
| <ul> |
| <li>Seeing history of an item</li> |
| <li>Comparing two versions of an item</li> |
| </ul> |
| |
| <h3>Branching/Tagging/Merging</h3> |
| <ul> |
| <li>Creating a branch</li> |
| <li>Moving a working copy to a branch</li> |
| <li>Finding the beginning of a branch</li> |
| <li>Porting a single change</li> |
| <li>Merging a whole branch</li> |
| <li>Reverting a committed change</li> |
| <li>Resurrecting deleted items</li> |
| <li>Creating a tag</li> |
| <li>Tweaking a tag</li> |
| <li>Seeing all tags</li> |
| <li>Comparing two tags</li> |
| <li>Seeing logs between two tags</li> |
| </ul> |
| |
| <h3>Other tasks</h3> |
| <ul> |
| <li>Using modules</li> |
| <li>Line endings and keywords</li> |
| </ul> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2 id="repos_creation">Repository creation</h2> |
| |
| <p>Create a new repository for holding versioned data.</p> |
| |
| <table class="sidebyside"> |
| <tr> |
| <th>CVS</th> |
| <th>Subversion</th> |
| </tr> |
| <tr> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ cvs -d /usr/local/repos init</tt></dd> |
| |
| <dt>Explanation:</dt> |
| <dd>Creates a new directory <tt>repos</tt> ready to hold RCS |
| files and config scripts.</dd> |
| </dl> |
| </td> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ svnadmin create /usr/local/repos</tt></dd> |
| |
| <dt>Explanation:</dt> |
| <dd>Creates a new directory <tt>repos</tt> containing BerkeleyDB |
| files and config scripts.</dd> |
| </dl> |
| </td> |
| </tr> |
| </table> |
| |
| <dl class="bookref"> |
| <dt>Book References:</dt> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/ch05s02.html">Repository Creation and Configuration</a></dd> |
| </dl> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2 id="import">Importing data</h2> |
| |
| <p>Populate a new repository with initial data. Assuming that you |
| have a tree of code in the local directory <tt>myproj/</tt>, and |
| you want to move this tree into the repository.</p> |
| |
| <table class="sidebyside"> |
| <tr> |
| <th>CVS</th> |
| <th>Subversion</th> |
| </tr> |
| <tr> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ cd myproj</tt></dd> |
| <dd><tt>$ cvs -d /usr/local/repos import myproj/ none start</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>This copies the contents of the current working directory to |
| a new directory (<tt>myproj</tt>) in the CVS repository. The |
| CVS repository now contains a directory <tt>/myproj/</tt> at the |
| top level.</dd> |
| |
| </dl> |
| </td> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ svn mkdir file:///usr/local/repos/tags</tt></dd> |
| <dd><tt>$ svn mkdir file:///usr/local/repos/branches</tt></dd> |
| <dd><tt>$ svn import myproj/ file:///usr/local/repos/trunk</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>Though not strictly required, we deliberately create |
| <tt>/tags</tt> and <tt>/branches</tt> top-level directories in |
| the repository, to hold tags and branches later on. Then we |
| import the contents of the local <tt>myproj/</tt> directory into |
| a newly created <tt>/trunk</tt> directory in the |
| repository.</dd> |
| </dl> |
| </td> |
| </tr> |
| </table> |
| |
| <dl class="bookref"> |
| <dt>Book References:</dt> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/ch05s04.html#svn-ch-5-sect-6.1">Choosing a repository layout</a></dd> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/re12.html">svn import</a></dd> |
| </dl> |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2 id="installing">Installing a server</h2> |
| |
| <p>Make the repository available to clients via a network.</p> |
| |
| <table class="sidebyside"> |
| <tr> |
| <th>CVS</th> |
| <th>Subversion</th> |
| </tr> |
| <tr> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd>(too complex to demonstrate here)</dd> |
| |
| <dt>Explanation:</dt> |
| <dd>Export the repository via the cvs <em>pserver</em> program. |
| It can be launched by either <strong>inetd</strong> or a |
| client's <strong>ssh</strong> remote request.</dd> |
| |
| </dl> |
| </td> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd>(too complex to demonstrate here)</dd> |
| |
| <dt>Explanation:</dt> |
| <dd>Export the repository with the <em>Apache 2.0.x</em> server, |
| or via the <em>svnserve</em> program. The latter can run as a |
| standalone daemon, can be launched by <strong>inetd</strong>, or |
| invoked by a client's <strong>ssh</strong> remote request.</dd> |
| |
| </dl> |
| </td> |
| </tr> |
| </table> |
| |
| <dl class="bookref"> |
| <dt>Book References:</dt> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/ch06.html">Server configuration</a></dd> |
| </dl> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2 id="authenticating">Authenticating to a server</h2> |
| |
| <p>Have a network client prove its identity to a version |
| control server.</p> |
| |
| <table class="sidebyside"> |
| <tr> |
| <th>CVS</th> |
| <th>Subversion</th> |
| </tr> |
| <tr> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ cvs -d :pserver:user@host:/repos <em>command</em>…</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>When contacting a repository, the client pre-emptively |
| "pushes" its authentication credentials at the server.</dd> |
| |
| </dl> |
| </td> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ svn <em>command</em> <em>URL</em>…</tt></dd> |
| <dd><tt>Password for 'user': XXXXXXX</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>The client's authentication credentials are "pulled" from |
| the user interactively, and only when the server deems that a |
| challenge needs to be made. (And contrary to popular belief, |
| the <tt>--username</tt> and <tt>--password</tt> options are |
| merely values to be used <em>if</em> the server issues a |
| challenge; they do not "push" the credentials at the |
| server.)</dd> |
| |
| </dl> |
| </td> |
| </tr> |
| </table> |
| |
| <dl class="bookref"> |
| <dt>Book References:</dt> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/ch06s02.html">Network Model</a></dd> |
| </dl> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2 id="browsing">Browsing a repository</h2> |
| |
| <p>Browse the repository as a filesystem, perusing file |
| contents and history as well (older versions of files or |
| trees.)</p> |
| |
| <table class="sidebyside"> |
| <tr> |
| <th>CVS</th> |
| <th>Subversion</th> |
| </tr> |
| <tr> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd>(not possible with commandline client)</dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>Not possible with commandline client. A third-party web |
| server tool such as ViewCVS must be used.</dd> |
| |
| </dl> |
| </td> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ svn list <em>URL</em> [-r <em>rev</em>] [-v]</tt></dd> |
| <dd><tt>$ svn cat <em>URL</em> [-r <em>rev</em>]</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>The <tt>svn list</tt> and <tt>svn cat</tt> commands allow |
| interactive browsing of a repository (and all previous states of |
| a repository) from the commandline. (The <tt>--verbose [-v]</tt> |
| switch displays full listing information.) If Apache is being |
| used as a Subversion server process (i.e. clients access via |
| <strong>http://</strong>), then the latest version of the |
| repository can be directly browsed by entering <em>URL</em> into |
| any web browser. Additionally, a third-party web server tool |
| (such as ViewCVS) can be used with Subversion.</dd> |
| |
| </dl> |
| </td> |
| </tr> |
| </table> |
| |
| <dl class="bookref"> |
| <dt>Book References:</dt> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/re14.html">svn list</a></dd> |
| </dl> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2 id="checkingout">Checking out a working copy</h2> |
| |
| <p>Create a workspace on local disk which mirrors a directory |
| in the repository.</p> |
| |
| <table class="sidebyside"> |
| <tr> |
| <th>CVS</th> |
| <th>Subversion</th> |
| </tr> |
| <tr> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ cvs -d /usr/local/repos checkout myproj</tt></dd> |
| <dd><tt>U myproj/foo.c</tt></dd> |
| <dd><tt>U myproj/bar.c</tt></dd> |
| <dd><tt>…</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>Creates a local directory <tt>myproj</tt> which is a mirror |
| of the repository directory <tt>/myproj</tt>.</dd> |
| |
| </dl> |
| </td> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ svn checkout file:///usr/local/repos/trunk myproj</tt></dd> |
| <dd><tt>A myproj/foo.c</tt></dd> |
| <dd><tt>A myproj/bar.c</tt></dd> |
| <dd><tt>…</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>Assuming that the original project data was imported into |
| the repository <tt>/trunk</tt> directory, this creates a local |
| directory <tt>myproj</tt> which is a mirror of the repository |
| directory <tt>/trunk</tt>. Standard Subversion convention is to |
| do "mainline" development in <tt>/trunk</tt>. See branching and |
| tagging sections for more details.</dd> |
| |
| </dl> |
| </td> |
| </tr> |
| </table> |
| |
| <dl class="bookref"> |
| <dt>Book References:</dt> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/ch03s04.html">Initial Checkout</a></dd> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/re04.html">svn checkout</a></dd> |
| </dl> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2 id="changeditems">Seeing locally changed items</h2> |
| |
| <p>Discover which items in the working copy have local |
| modifications or are scheduled for addition/deletion.</p> |
| |
| <table class="sidebyside"> |
| <tr> |
| <th>CVS</th> |
| <th>Subversion</th> |
| </tr> |
| <tr> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ cvs status</tt></dd> |
| <dd><tt>…</tt></dd> |
| <dd><tt>File: baz.c Status: Up-to-date</tt></dd> |
| <dd><tt>…</tt></dd> |
| <dd><tt>$ cvs update</tt></dd> |
| <dd><tt>M foo.c</tt></dd> |
| <dd><tt>U bar.c</tt></dd> |
| <dd><tt>…</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>The <tt>cvs status</tt> command shows whether a file is |
| locally modified or out of date, including information about |
| working revision and branch info. Unfortunately, because the |
| output is so verbose and hard to read, many users run <tt>cvs |
| update</tt> instead, which shows a more compact listing of |
| modified files (and of course, it also causes the server to |
| merge changes into your working copy.)</dd> |
| |
| </dl> |
| </td> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ svn status</tt></dd> |
| <dd><tt>M foo.c</tt></dd> |
| <dd><tt>…</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>Shows modified files only. Very fast, as it does not use |
| the network. Does not update your working copy, yet still shows |
| a single-line display, much like <tt>svn update</tt>. To see |
| working revision and branch information, run <tt>svn info</tt>.</dd> |
| |
| </dl> |
| </td> |
| </tr> |
| </table> |
| |
| <dl class="bookref"> |
| <dt>Book References:</dt> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/ch03s05.html#svn-ch-3-sect-4.3.1">Examine Your Changes</a></dd> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/re26.html">svn status</a></dd> |
| </dl> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2 id="outofdate">Seeing out-of-date items</h2> |
| |
| <p>Discover which items in the working copy are out-of-date |
| (i.e. newer versions exist in the repository.)</p> |
| |
| <table class="sidebyside"> |
| <tr> |
| <th>CVS</th> |
| <th>Subversion</th> |
| </tr> |
| <tr> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ cvs status</tt></dd> |
| <dd><tt>…</tt></dd> |
| <dd><tt>File: baz.c Status: Needs Patch</tt></dd> |
| <dd><tt>…</tt></dd> |
| <dd><tt>$ cvs -n update</tt></dd> |
| <dd><tt>M foo.c</tt></dd> |
| <dd><tt>U bar.c</tt></dd> |
| <dd><tt>…</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>The <tt>cvs status</tt> command shows whether a file is |
| locally modified or out of date, including information about |
| working revision and branch info. A less verbose option is to |
| run <tt>cvs -n update</tt> instead, which shows a compact |
| listing of both out-of-date and locally modified files, without |
| actually updating the working copy.</dd> |
| |
| </dl> |
| </td> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ svn status -u</tt></dd> |
| <dd><tt>M 46 foo.c</tt></dd> |
| <dd><tt>M * 46 bar.c</tt></dd> |
| <dd><tt> * 46 baz.c</tt></dd> |
| <dd><tt>…</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>Shows modified files (<tt>M</tt>) as well as out-of-date |
| files (<tt>*</tt>). Contacts repository, but doesn't modify the |
| working copy. To see working revision and branch information, |
| run <tt>svn info</tt>.</dd> |
| |
| </dl> |
| </td> |
| </tr> |
| </table> |
| |
| <dl class="bookref"> |
| <dt>Book References:</dt> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/ch03s05.html#svn-ch-3-sect-4.3.1">Examine Your Changes</a></dd> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/re26.html">svn status</a></dd> |
| </dl> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2 id="scheduling">Scheduling additions or deletions</h2> |
| |
| <p>Schedule a working-copy file or directory to be added or |
| removed from the repository.</p> |
| |
| <table class="sidebyside"> |
| <tr> |
| <th>CVS</th> |
| <th>Subversion</th> |
| </tr> |
| <tr> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ touch foo.c</tt></dd> |
| <dd><tt>$ cvs add foo.c</tt></dd> |
| <dd><tt>cvs server: scheduling file `blah' for addition</tt></dd> |
| <dd><tt>cvs server: use 'cvs commit' to add this file permanently</tt></dd> |
| <dd><tt> </tt></dd> |
| <dd><tt>$ mkdir new-dir</tt></dd> |
| <dd><tt>$ cvs add new-dir</tt></dd> |
| <dd><tt>Directory new-dir added to the repository</tt></dd> |
| <dd><tt> </tt></dd> |
| <dd><tt>$ rm bar.c</tt></dd> |
| <dd><tt>$ cvs rm bar.c</tt></dd> |
| <dd><tt>cvs remove: scheduling `bar.c' for removal</tt></dd> |
| <dd><tt>cvs remove: use 'cvs commit' to remove this file permanently</tt></dd> |
| <dd><tt> </tt></dd> |
| <dd><tt>$ rm -rf old-dir/*</tt></dd> |
| <dd><tt>$ cvs rm old-dir</tt></dd> |
| <dd><tt>cvs remove: Removing 3bits</tt></dd> |
| <dd><tt>…</tt></dd> |
| |
| |
| <dt>Explanation:</dt> |
| |
| <dd>Schedules a file or directory for addition or removal |
| to/from the repository. The repository will not be changed |
| until the user runs <tt>cvs commit</tt>, except for the case of |
| adding a directory, which immediately changes the repository. |
| Also, directories cannot be truly removed from the repository, |
| just emptied out. (<tt>cvs update -P</tt> will prune empty |
| directories from your working copy.)</dd> |
| |
| </dl> |
| </td> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ touch foo.c</tt></dd> |
| <dd><tt>$ svn add foo.c</tt></dd> |
| <dd><tt>A foo.c</tt></dd> |
| <dd><tt> </tt></dd> |
| <dd><tt>$ mkdir new-dir</tt></dd> |
| <dd><tt>$ svn add new-dir</tt></dd> |
| <dd><tt>A new-dir</tt></dd> |
| <dd><tt> </tt></dd> |
| <dd><tt>$ svn rm bar.c</tt></dd> |
| <dd><tt>D bar.c</tt></dd> |
| <dd><tt> </tt></dd> |
| <dd><tt>$ svn rm old-dir</tt></dd> |
| <dd><tt>D old-dir/file1</tt></dd> |
| <dd><tt>D old-dir/file2</tt></dd> |
| <dd><tt>…</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>Schedules a file or directory for addition or removal |
| to/from the repository. The repository will not be changed |
| until the user runs <tt>svn commit</tt>. The scheduled |
| operations are shown as <tt>A</tt> or <tt>D</tt> by <tt>svn |
| status</tt>, and <tt>svn revert</tt> can un-do the scheduling. |
| Directories really can be deleted (though as with all deleted |
| items, continues to exist in history.)</dd> |
| |
| </dl> |
| </td> |
| </tr> |
| </table> |
| |
| <dl class="bookref"> |
| <dt>Book References:</dt> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/ch03s05.html#svn-ch-3-sect-4.2">Make Changes to Your Working Copy</a></dd> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/re01.html">svn add</a></dd> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/re08.html">svn delete</a></dd> |
| </dl> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2 id="copying">Copying and moving</h2> |
| |
| <p>Copy or move/rename a file or directory.</p> |
| |
| <table class="sidebyside"> |
| <tr> |
| <th>CVS</th> |
| <th>Subversion</th> |
| </tr> |
| <tr> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd>(not possible.)</dd> |
| |
| |
| <dt>Explanation:</dt> |
| |
| <dd>Not possible, unless an administrator directly mucks with |
| RCS files in the repository. (And in that case, no history |
| records the act of copying or renaming.)</dd> |
| |
| </dl> |
| </td> |
| <td> |
| <dl> |
| <dt>Commands:</dt> |
| <dd><tt>$ svn copy foo.c foo2.c</tt></dd> |
| <dd><tt>A foo2.c</tt></dd> |
| <dd><tt> </tt></dd> |
| <dd><tt>$ svn copy dir dir2</tt></dd> |
| <dd><tt>A dir2</tt></dd> |
| <dd><tt> </tt></dd> |
| <dd><tt>$ svn move bar.c baz.c</tt></dd> |
| <dd><tt>A baz.c</tt></dd> |
| <dd><tt>D bar.c</tt></dd> |
| <dd><tt> </tt></dd> |
| <dd><tt>$ svn move dirA dirB</tt></dd> |
| <dd><tt>A dirB</tt></dd> |
| <dd><tt>D dirA/file1</tt></dd> |
| <dd><tt>D dirA/file2</tt></dd> |
| <dd><tt>…</tt></dd> |
| |
| <dt>Explanation:</dt> |
| |
| <dd>The <tt>svn copy</tt> command schedules a file or directory |
| for addition to the repository, recording the "source" of the |
| copy. After committing, <tt>svn log</tt> on the copied item |
| will trace history back through the original copy-source. The |
| <tt>svn move</tt> command is exactly equivalent to running |
| <tt>svn copy</tt>, followed by an <tt>svn delete</tt> on the |
| copy-source: the result is a new item scheduled for addition |
| (with copy-history attached) and the original item scheduled for |
| deletion.</dd> |
| |
| </dl> |
| </td> |
| </tr> |
| </table> |
| |
| <dl class="bookref"> |
| <dt>Book References:</dt> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/ch03s05.html#svn-ch-3-sect-4.2">Make Changes to Your Working Copy</a></dd> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/re07.html">svn copy</a></dd> |
| <dd><a href="http://svnbook.red-bean.com/svnbook/re18.html">svn move</a></dd> |
| </dl> |
| |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2>Finding the beginning of a branch</h2> |
| |
| <p>If you're attempting to merge an entire branch into another, you |
| need to compare the "root" and "tip" of the source branch, and then |
| merge those differences into a working copy of the target branch. |
| Obviously the "tip" of the branch can be represented by using the |
| <tt>HEAD</tt> keyword. But how do you find the "birth" revision of |
| the source branch?</p> |
| |
| <p>The easiest solution is to run</p> |
| |
| <pre> |
| $ svn log -v --stop-on-copy source-branch-URL |
| … |
| </pre> |
| |
| <p>This command will display every change ever made to the branch, but |
| <tt>--stop-on-copy</tt> option will cause the output to stop as soon |
| as detects a copy operation in the branch's history. By definition, |
| then, the very last log entry printed will show the copy being made. |
| It will look something like:</p> |
| |
| <pre> |
| r9189 | joe | 2004-03-22 10:10:47 -0600 (Mon, 22 Mar 2004) | 1 line |
| Changed paths: |
| A /branches/mybranch (from /trunk:9188) |
| </pre> |
| |
| <p>In this case, you would then know to compare revisions 9189 and |
| HEAD of the branch in order to perform the merge:</p> |
| |
| <pre> |
| $ svn merge -r9189:HEAD source-branch-URL target-branch-WC |
| … |
| </pre> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2>Seeing all of a project's tags</h2> |
| |
| <p>Assuming you've been following a consistent policy for creating |
| tag-copies, then this is just a matter of running <tt>svn ls</tt> on a |
| directory containing your tags. Typically you would run it on the |
| <tt>/tags</tt> directory in your repository, although you're certainly |
| free to organize this directory in a more complex way, or invent a |
| different convention altogether.</p> |
| |
| <p>As an example, you can see all of Subversion's tags by running:</p> |
| |
| <pre> |
| $ svn ls --verbose http://svn.apache.org/repos/asf/subversion/tags |
| … |
| 7739 kfogel Nov 13 22:05 0.33.0/ |
| 7796 josander Nov 18 12:15 0.33.1/ |
| 7932 josander Dec 03 17:54 0.34.0/ |
| 8045 josander Dec 19 15:13 0.35.0/ |
| 8063 josander Dec 20 11:20 0.35.1/ |
| 8282 josander Jan 13 14:15 0.36.0/ |
| 8512 josander Jan 24 17:31 0.37.0/ |
| 8810 kfogel Feb 23 03:44 1.0.0/ |
| … |
| </pre> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2>Seeing the differences between two tags</h2> |
| |
| <p>Just use <tt>svn diff</tt> in its fully expanded form, which |
| compares any two URLs:</p> |
| |
| <pre> |
| $ svn diff tagURL1 tagURL2 |
| … |
| </pre> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2>Seeing logs between two tags</h2> |
| |
| <p>This is a somewhat common practice in CVS, and is doable in Subversion, |
| but requires a little bit more work. Assuming that you've made two |
| tags of <tt>/trunk</tt> at different points in time, the ultimate goal |
| here is to run </p> |
| |
| <pre> |
| $ svn log -rX:Y trunkURL |
| </pre> |
| |
| <p>…where X and Y are the revisions from which the two tags were |
| copied. To discover X and Y, you can use the same technique |
| described in the previous section ("finding the beginning of a |
| branch".) Just use the <tt>--stop-on-copy</tt> option when logging the |
| history of each tag. No commits happen on tag directories, so the |
| following commands should each produce exactly <em>one</em> log |
| entry:</p> |
| |
| <pre> |
| $ svn log -v --stop-on-copy tag1-URL |
| |
| r3520 | joe | 2004-03-12 15:28:43 -0600 (Fri, 12 Mar 2004) | 1 line |
| … |
| |
| $ svn log -v --stop-on-copy tag2-URL |
| a |
| r4177 | joe | 2004-03-12 15:28:43 -0600 (Fri, 12 Mar 2004) | 1 line |
| … |
| </pre> |
| |
| <p>So in this example, the values of X and Y are 3520 and 4177. Now |
| you can view all <tt>/trunk</tt> changes between those two points in time:</p> |
| |
| <pre> |
| $ svn log -r3520:4177 trunkURL |
| … |
| </pre> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2>Fixing an incorrect tag</h2> |
| |
| <p>If your tag is a bit off, you can "adjust" it just as people often |
| do in CVS. Simply check out a working copy of the tag directory, make |
| any changes you wish, and commit.</p> |
| |
| <p>Remember, because branches and tags are directories, they can also |
| be deleted when they're no longer of any use to your project. They'll |
| continue to exist in the repository's history.</p> |
| |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| <div class="h2"> |
| <h2>Creating/using "modules"</h2> |
| |
| <p>Compare CVS Modules vs. svn:externals.</p> |
| |
| </div> |
| |
| <!-- ==================================================================== --> |
| </body> |
| </html> |