Shell Programming and Scripting

A102345,abc123
A102347,dfg475

Old/A/ABC/abc123.ai
Old/A/ABC/abc123.pdf
Old/D/DFG/dfg475.ai
Old/D/DFG/dfg475.pdf

New/A102345_abc123.ai
New/A102345_abc123.pdf
New/A102347_dfg475.ai
New/A102347_dfg475.pdf

while IFS="," read NEWNAME OLDNAME
do
        UPPER=$(echo "$OLDNAME" | tr '[a-z]' '[A-Z]')
        for EXT in ai pdf
        do
                if [ -f Old/${UPPER:0:1}/${UPPER:0:3}/${OLDNAME}.${EXT} ]
                then
                        echo mv Old/${UPPER:0:1}/${UPPER:0:3}/${OLDNAME}.${EXT} New/${NEWNAME}_${OLDNAME}.${EXT}
                fi
        done

        fi
done < file.csv

#!/bin/bash
INPUT=~/New_Names.csv
OLDIFS=$IFS
IFS=","
[ ! -f $INPUT ] & while read new old
do
#echo $old
find ~/Desktop/Arts/ -name "$old*" >> Results.txt
#previous command dose not produce results.
#would rather pipe search results to xargs & mv instead of outputing to .txt
###
#following command is an attempt to mv the files from the search results to New directory renaming
#them appending $new field data of csv to beginning of file names.
for f in `cat Results.txt`; do mv ./"$f" "./New/${$new%f}";
done <$INPUT
IFS=$OLDIFS

#!/usr/bin/ksh
typeset -u mFirst
typeset -u mPref
IFS=','
while read mFld1 mFld2; do
  mFirst=$(echo ${mFld2} | cut -c1)
  mPref=$(echo ${mFld2} | cut -c1-3)
  mNewFN=${mFld1}'_'${mFld2}
  mv /Old/${mFirst}/${mPref}/${mFld2}.ai /New/${mNewFN}.ai
  mv /Old/${mFirst}/${mPref}/${mFld2}.pdf /New/${mNewFN}.pdf
done < Inp_File