在继续阅读之前，需要知道 Subversion 使用中最重要的命令：svn help，Subversion 命令行工具是一个自包含文档的工具—在任何时候你可以运行 svn help SUBCOMMAND 来查看子命令的语法, 参数以及行为方式。

$ svn help import
import: Commit an unversioned file or tree into the repository.
usage: import [PATH] URL

  Recursively commit a copy of PATH to URL.
  If PATH is omitted '.' is assumed.
  Parent directories are created as necessary in the repository.
  If PATH is a directory, the contents of the directory are added
  directly under URL.
  Unversionable items such as device files and pipes are ignored
  if --force is specified.

Valid options:
  -q [--quiet]             : print nothing, or only summary information
  -N [--non-recursive]     : obsolete; try --depth=files or --depth=immediates
  --depth ARG              : limit operation by depth ARG ('empty', 'files',
                             'immediates', or 'infinity')
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