Hello,
Yes there is use the following:
#chown username:username *
#chown username:username *.*
You may or may not need the second one, I cannot remember at the moment. That will change the ownership of all the files in the folder you are in. If there are any sub folders that you want the ownership changed, do the following
#chown username:username */*
#chown username:username */*.*
for each sub folder and file in the sub folder, add /* and /*.* to the above until all the ownerships are changed. (not you cannot do this:: #chown username:username */*.*/*.* or */*.*/* the *.* cannot be in the middle, it must always be at the end.