Shell Programming and Scripting

cat file1
a b c d e f

foreach i (`cat file1`)
 foreach j (`cat file1`)
#do something here
 end
end

data=`cat file1`
data=($data)
n=0
for i in "${data[@]}"; do

        m=$n
        for j in "${data[@]}"; do

                if [ $m -ne $n ]; then
                        if [ "$i" != "$j" ]; then
                                echo "comparing $i $j"
                        fi
                fi
                echo ""
                (( m++ ))
        done
        (( n++ ))
done