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Exercise #5 answers
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#!/bin/sh -u

PATH=/bin:/usr/bin ; export PATH
LC_COLLATE=C ; export LC_COLLATE
LANG=C ; export LANG
umask 022

rm -rf image5
mkdir image5
cd image5 
pwd
cp ~idallen/image/* ./
mv "dt   " "mystery image fragment dt"
mv "* frag   bf" "mystery image fragment bf"
mv "*  go  *" "mystery image fragment go"
mv "   gw" "mystery image fragment gw"
mv "zfrag  aa" "mystery image fragment aa"
cat mystery* > image.jpg
rm -f mystery* README*
ls -l image.jpg
sum image.jpg
# xli image.jpg