svn help
. The Subversion command-line client is self-documenting -- at any time, a quick svn help SUBCOMMAND
describes the syntax, options, and behavior of the subcommand.
svn help update update (up): Bring changes from the repository into the working copy. usage: update [PATH...] If no revision is given, bring working copy up-to-date with HEAD rev. Else synchronize working copy to revision given by -r. For each updated item a line will start with a character reporting the action taken. These characters have the following meaning: ...