Subversionで＄Ｉｄキーワードを使うには
$ cd work/trunk
$ svn proplist -v ChangeLog
$ svn propset svn:keywords Id ChangeLog
property 'svn:keywords' set on 'ChangeLog'
$ svn proplist -v ChangeLog
Properties on 'ChangeLog':
svn:keywords : Id
$ svn status
? trunk
M ChangeLog