Shell Programming and Scripting

#!/bin/bash

SCRIPT=/tmp/mv_script.sh
cd /home/jim                      # change this path 
echo "cd `pwd`" > $SCRIPT

ls | awk '{
          if( $0~/_[A-Z]{2}.txt$/)
             {                  
                   f=substr($0,length($0)-5,2)                   
                   printf("[ -d %s ] || mkdir %s\n", f, f)
                   printf("mv %s ./%s/%s \n", $0, f, $0)            
             }               
        } ' >> $SCRIPT
chmod +x $SCRIPT

#!/bin/bash
while read i
do
     mkdir $(echo ${i:6:2}) && mv $i $(echo ${i:6:2})
done < <(ls |awk --posix '$0~/[A-Z]{2}.txt$/')

printf "%s\n" *__*.txt | 
while IFS='_.' read name x kind suffix
do
  mkdir "$kind" 2>/dev/null
  mv "${name}__${kind}.${suffix}" "$kind"
done