I wrote the below BASH function today. It’s good because it performs super well compared to the alternative commands (which are commented out below above the new commands):

own() {

  echo "Taking ownership..."
  #chown -R jj5:jj5 .
  find . \! -user jj5 -or \! -group jj5 -execdir chown jj5:jj5  "{}" \;
  [ "$?" = 0 ] || { echo "Could not take ownership in '$PWD'."; exit 1; }

  echo "Fixing directory permissions..."
  #find . -type d -execdir chmod u+rwx "{}" \;
  find . -type d -and \( \! -perm /u=r -or \! -perm /u=w -or \! -perm /u=x \) -execdir chmod u+rwx "{}" \;
  [ "$?" = 0 ] || { echo "Could not fix directory permissions in '$PWD'."; exit 1; }

  echo "Fixing file permissions..."
  #find . -type f -execdir chmod u+rw "{}" \;
  find . -type f -and \( \! -perm /u=r -or \! -perm /u=w \) -execdir chmod u+rw "{}" \;
  [ "$?" = 0 ] || { echo "Could not fix file permissions in '$PWD'."; exit 1; }

}

The basic premise is don’t do work which doesn’t need to be done!