Reverting single file in SVN to a particular revision

Question

I have a file as shown below in an SVN repo that I would like to revert to a previous version. What is the way to do this in SVN? I want only downgrade this particular file to a

Answer 1

sudo svn revert filename

this is the better way to revert a single file

Answer 2

svn cat takes a revision arg too!

svn cat -r 175 mydir/myfile > mydir/myfile