2)
set -f Takes away filename expansions
set +f Envoke filename expansions
set -x Displays all expressions possible

Assignment 4
1)

# coolct.ksh
clear
echo
echo "type end to quit"
if (($word==$end))
then break
else
echo
echo "Enter file name for word count"
echo
read file
echo Word count is, $(wc <$file)"
fi
done

2)
# last.ksh
echo Number of arguments given is $#
echo
echo "Last argument is, $# -l $"
done

3)
# gp.ksh
echo
echo "Enter parameter"
read $re
cat $re |more
done
 

Project
#project.ksh
 #N=filename; W= word or $ in a file; L=list files

echo
echo "N, W, or L?"
 read input
if (($input==N))
 then
  echo "Input file name"
  read file
  ls -l file
 fi
if (($input==W))
 then
  echo "Input word to find))
  read $word
  cat $word
 fi
if(($input==L))
 then
  ls -l
 fi
else
 echo "Illegal option"
done