UNIX for Dummies Questions & Answers

typeset -i x=5
typeset -i i=0
typeset -i j=0
typeset -i y=0
array[0]=1
array[1]=2
array[2]=2
array[3]=3
array[4]=4

i=0
while (( i < x )); do

        (( j = i + 1 ))
        while (( j < x )); do
                if [ ${array[i]} = ${array[j]} ]; then
                        break
                fi

                (( j = j + 1 ))
        done

        if [ $j = $x ]; then
                newarr[y]=${array[i]}
                (( y = y + 1 ))
        fi
        (( i = i + 1 ))
done

i=0
while (( i < y )); do

        echo "${newarr[i]}"
        (( i = i + 1))
done

set -A new_array `echo ${old_array[*]} | tr ' ' '\012' | sort -u`