| Can you try this little script. It is kind of mundane but illustrates the renaming to lower case:
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#!/bin/csh -f
foreach file (*JPG)
set first = `echo ${file} | cut -d "." -f 1`
set second = `echo ${file} | cut -d "." -f 2`
set firstlower = `echo ${first} | tr "A-Z" "a-z"`
set secondlower = `echo ${second} | tr "A-Z" "a-z"`
echo "** Rename ${first}.${second} to ${firstlower}.${secondlower}"
mv ${first}.${second} ${firstlower}.${secondlower}
end
exit
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