Revert changes in SVN
There is
svn revert -R
But sometimes after a svn merge, I see a lot of files are marked as modified because their property has changed. There is a way of reverting them separately.
Reverting all file changes
svn st | grep -e '^M' | awk '{print $2}' | xargs svn revert
Revert all file property changes
svn st | grep -e '^\sM' | awk '{print $2}' | xargs svn revert