mkdir svntest
cd svntest
svnadmin create repos
DIR=`pwd`
mkdir initial
mkdir initial/dir1
mkdir initial/dir2
svn import initial file://$DIR/repos -m "Initial import"
svn co file://$DIR/repos work
svn rm work/dir2
svn commit work -m "Delete dir2"
mv repos repos2
cd work
svn switch --relocate file://$DIR/repos file://$DIR/repos2