Shell Programming and Scripting

AK
AR
AL
AZ
CA
CO
CT

typeset -i counter=0
typeset prev_param
typeset curr_param

while read in
do
        counter=`expr $counter + 1`
        modulus=`expr $counter % 2`

        if [ $modulus -eq 0 ]
        then
                curr_param=$( echo $in )
                # nohup script $prev_param &
                # nohup script $curr_param &
                wait
        else
                prev_param=$( echo $in )
        fi
done < input_file

nolines=`wc -l input_file | awk ' { print $1 } '`
modulus=`expr $nolines % 2`

# Execute last input if the number of lines is ODD
if [ $modulus -ne 0 ]
then
        # nohup script $prev_param &
fi

paste ... | while read ...; do
    nohup ... &
    nohup ... &
    wait
done

wc -l filename | awk '{print $1}'

wc -l < filename