Shell Programming and Scripting

echo "Enter a word"
read a
echo "Enter another word"
read b
echo "Enter another word"
read c

if [[ "$a" < "$b" ]] && [[ "$b" < "$c" ]]
then
  echo "$a"
  echo "$b"
  echo "$c"
elif [[ "$a" > "$b" ]] && [[ "$b" > "$c" ]]
then 
  echo "$c"
  echo "$b"
  echo "$a"
elif [[ "$a" > "$b" ]] && [[ "$b" < "$c" ]]
then 
  echo "$b"
  echo "$a"
  echo "$c"
elif [[ "$a" < "$b" ]] && [[ "$b" > "$c" ]]
then 
  echo "$c"
  echo "$a"
  echo "$b"
fi

#!/bin/ksh
echo "Enter a word"
read a
echo "Enter another word"
read b
echo "Enter another word"
read c
tmpdir=/tmp/.$$
mkdir $tmpdir
touch $tmpdir/"$a" $tmpdir/"$b" $tmpdir/"$c"
ls -1 $tmpdir
rm -rf $tmpdir

#!/bin/ksh
echo "Enter first word"
read a
echo "Enter second word"
read b
echo "Enter third word"
read c
set $a $b $c
set -s
echo $1\\n$2\\n$3

echo "Enter first word"
read a
echo "Enter second word"
read b
echo "Enter third word"
read c
S="Z"
while [ ! -z "$S" ] ; do
   S=
   [[ "$a" > "$b" ]] && S="$b" && b="$a" && a="$S"
   [[ "$b" > "$c" ]] && S="$c" && c="$b" && b="$S"
done
echo $a\\n$b\\n$c

echo "Enter a word"
read a
echo "Enter another word"
read b
echo "Enter another word"
read c

if [[ "$a" < "$b" ]]
then
  if [[ "$b" < "$c" ]]
  then
    echo "$a"
    echo "$b"
    echo "$c"
  elif [[ "$a" < "$c" ]]
  then
    echo "$a"
    echo "$c"
    echo "$b"
  else
    echo "$c"
    echo "$a"
    echo "$b"
  fi
else
  if [[ "$a" < "$c" ]]
  then
    echo "$b"
    echo "$a"
    echo "$c"
  elif [[ "$b" < "$c" ]]
  then
    echo "$b"
    echo "$c"
    echo "$a"
  else
    echo "$c"
    echo "$b"
    echo "$a"
  fi
fi