Solutions to HW 6
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1. 
#!/bin/bash
for i
do
  echo "==>" Below lines are taken from $i "<=="
  cat $i
done

2.
#!/bin/bash
for i
do
  newname=`echo "$i" | tr " " "."`
  mv "$i" $newname
done

3. 
#!/bin/bash
cp $2 $1