linux+svn+revert命令

Reverting Changes with svn revert Command

The svn revert command in Linux is a powerful tool that allows you to undo or revert changes made to a file or a directory in a Subversion (SVN) repository. In this article, we will explore how to use the svn revert command effectively.

To begin, let’s first understand what the svn revert command does. When you make changes to files or directories in your working copy, SVN keeps track of these modifications. These changes can include modifications, additions, or deletions. The svn revert command allows you to discard and undo these changes, reverting the modified files or directories back to the state they were in when you last updated or checked them out from the repository.

The basic syntax for using the svn revert command is as follows:

svn revert PATH

Here, PATH refers to the file or directory you want to revert. It can be a single file, multiple files, or an entire directory.

Now, let’s explore some common scenarios where the svn revert command can be useful:

1. Revert a Modified File: If you have made changes to a file and want to discard those changes, you can use the svn revert command. For example:

svn revert file.txt

This command will revert the changes made to the file.txt and restore it to the state it was in before you made the modifications.

2. Revert All Modified Files: If you have multiple files that you want to revert to their previous state, you can use the svn revert command with the –recursive or -R option along with the directory path. For example:

svn revert -R directory/

This command will revert all the modified files in the specified directory and its subdirectories.

3. Revert Deleted Files: If you have accidentally deleted a file and want to restore it, you can use the svn revert command. For example:

svn revert deleted_file.txt

This command will bring back the deleted_file.txt to your working copy.

4. Revert Added Files: If you have added a file to your working copy and want to remove it, you can use the svn revert command. For example:

svn revert added_file.txt

This command will remove the added_file.txt from your working copy.

5. Revert Mixed Changes: If you have a mix of modifications, additions, and deletions in your working copy, you can use the svn revert command with the -R option to revert all changes. For example:

svn revert -R directory/

This command will revert all modifications, additions, and deletions in the specified directory and its subdirectories.

It is worth mentioning that the svn revert command only affects your working copy and does not commit any changes to the repository. If you wish to discard changes from the repository, you need to perform an svn commit after reverting the files.

In conclusion, the svn revert command in Linux is a useful tool for undoing changes made to files or directories in a Subversion repository. By understanding its syntax and usage, you can effectively revert modifications, additions, and deletions in your working copy and restore the files to their previous state.

Linux系统中使用SVN版本控制系统时，revert命令用于还原工作副本中的修改。下面是关于Linux+SVN+revert命令的五个要点：

1. revert命令的基本用法：
– 单个文件还原：`svn revert <文件名>`
– 还原整个工作副本：`svn revert -R <工作副本路径>`

2. revert命令的作用：
revert命令用于取消对工作副本的修改，并将工作副本还原到最近的提交版本。这对于撤销错误的修改或取消正在进行的更改非常有用。

3. revert命令的注意事项：
– revert命令只针对工作副本进行操作，不会影响版本库中的提交历史。
– revert命令只能还原已经添加到版本控制的文件或文件夹。
– revert命令将删除所有未提交的修改，因此在执行前应先确认是否要还原。

4. revert命令的选项：
– `-R`：递归地还原整个工作副本。
– `–depth`：指定还原的深度，可以是empty、files、immediates或infinity。
– `–changelist`：指定还原指定变更列表中的文件。

5. revert命令与其他命令的区别：
– revert和update命令的区别在于revert是将工作副本还原到最近的提交版本，而update是将工作副本更新到最新的版本。
– revert和delete命令的区别在于revert只还原本地修改，而delete是从版本控制中删除文件。

总结：
在Linux系统中使用SVN版本控制系统时，revert命令可以帮助我们取消对工作副本的修改，通过将工作副本还原到最近的提交版本来避免错误的修改或取消正在进行的更改。使用revert命令时需要注意，它只对已添加到版本控制的文件或文件夹生效，且会删除所有未提交的修改，因此在执行前应先确认是否要还原。通过了解revert命令的选项和与其他命令的区别，我们可以更好地掌握SVN版本控制系统在Linux中的使用。

在Linux系统下使用SVN进行版本控制时，revert命令是一个非常有用的命令。它允许我们撤销修改，并将文件恢复到之前的版本状态。本文将通过简单的步骤和操作流程来介绍如何在Linux系统下使用revert命令。

1. 安装和配置SVN
首先，我们需要在Linux系统上安装SVN。使用以下命令来安装SVN：
“`
sudo apt-get install subversion
“`
安装完成后，我们需要创建一个版本库以进行版本控制，可以使用以下命令来创建一个新的版本库：
“`
svnadmin create /path/to/repository
“`
接下来，我们需要在系统中配置用户信息，使用以下命令来进行配置：
“`
svn co file:///path/to/repository
cd repository
svn propedit svn:ignore .
“`
这将打开一个文本编辑器，你可以在里面输入你要忽略的文件或文件夹的名称。保存并关闭编辑器。

2. 检出代码
在开始使用revert命令之前，我们需要先将代码库中的代码检出到本地。使用以下命令进行检出：
“`
svn checkout file:///path/to/repository
“`
这将创建一个工作副本，其中包含最新的代码。

3. 使用revert命令撤销修改
现在我们已经有了本地代码的副本，可以使用revert命令来撤销对文件的修改。revert命令有两种用法：撤销对单个文件的修改和撤销对整个目录的修改。

a. 撤销对单个文件的修改
如果只需要撤销对单个文件的修改，可以使用以下命令：
“`
svn revert /path/to/file
“`
这将撤销对/file路径下文件所做的所有修改，并将其恢复到最后一次提交的状态。

b. 撤销对整个目录的修改
如果需要撤销对整个目录的修改，可以使用以下命令：
“`
svn revert -R /path/to/directory
“`
-R参数表示递归，将递归地撤销对/directory路径下所有文件的修改。

4. 提交修改
完成撤销操作后，我们需要将撤销的修改提交回代码库中。使用以下命令提交修改：
“`
svn commit -m “Reverted changes”
“`
这将提交所有撤销的修改，并在提交信息中写入”Reverted changes”。

总结：
使用revert命令可以很方便地在Linux系统下撤销对文件或目录的修改，并将其恢复到之前的版本状态。通过上述步骤，你可以学会在Linux系统下使用revert命令进行版本控制。