desktop-base-kde/bin/kde5-migrate-user-conf

#!/bin/bash
# openmamba simple kde4->kde5 user config migration script
if [ "$1" = "-f" ]; then
   FORCE=1
#else
#   [ -e ~/.kde4/share/config/ -a ! -e ~/.kde4/share/.kde5_conf_migrated ] || exit 0
fi
for p in ~/.kde4/share/config/*; do
   [ -L $p ] && continue
   f=`basename $p`
   if [ -e ~/.config/$f ]; then
      if [ "$FORCE" ]; then
         echo "Migrating $p -> ~/.config/$f [forced]"
         mv ~/.config/$f ~/.config/$f.bak
         mv $p ~/.config/ || exit 1
         ln -s ../../../.config/$f $p || exit 1
      fi
      #echo "SKIPPED: $p"
   else
      echo "Migrating $p -> ~/.config/$f"
      mv $p ~/.config/ || exit 1
      ln -s ../../../.config/$f $p || exit 1
   fi
done

for p in ~/.kde4/share/apps/*; do
   [ -L $p ] && continue
   f=`basename $p`
   if [ -e ~/.local/$f ]; then
      if [ "$FORCE" ]; then
         echo "Migrating $p -> ~/.local/$f [forced]"
         mv ~/.local/$f ~/.local/$f.bak
         mv $p ~/.local/ || exit 1
         ln -s ../../../.local/$f $p || exit 1
      fi
      #echo "SKIPPED: $p"
   else
      echo "Migrating $p -> ~/.local/$f"
      mv $p ~/.local/ || exit 1
      ln -s ../../../.local/$f $p || exit 1
   fi
done
touch ~/.kde4/share/.kde5_conf_migrated