how to ignore files and folders in subversion?

I always forget how to ignore files and folder if I'm adding subversion support to a project.
Why do I need it? For example, I do not want to add log files or customer related content (uploaded files etc.) into repository.

It's quite simple. In command line type following command:

svn propedit svn:ignore ./path/to/folder

It's not end of process. With this command you set up ignore property for given path / folder. It will open a text editor, where you can specify what exactly should be ignored.

With a * it will ignore all files and subfolder under specified folder.

It is possible to describe multiple patterns, just like that..

*.log

*.class

tmp_files.*

Go ahead and try it out!