#!/bin/ksh

for i in *.png *.jpg
do
  case $i in 
  Class_Diagram*) 
    newname="class-diagram-$( echo $i | sed 's/^.*__//g' )"
    echo "$i -> $newname"
    mv $i $newname
  ;;
  Sequence_Diagram*) 
    newname="sequence-diagram-$( echo $i | sed 's/^.*__//g' )"
    echo "$i -> $newname"
    mv $i $newname
  ;;
  Implementation_Diagram*)
    newname="implementation-diagram-$( echo $i | sed 's/^.*__//g' )"
    echo "$i -> $newname"
    mv $i $newname  
  ;;
  
  esac
done