FIT SKJ cashmax

#!/bin/bash

while read -r
do
    echo "$REPLY" | awk '{if (NF != 2) exit 1}'
    ret=$?
    [ $ret -eq 1 ] && continue
    pokladna=$(echo "$REPLY" | awk '{print $1}')
    castka=$(echo "$REPLY" | awk '{print $2}')
    [[ $castka =~ ^-?([1-9][0-9]*|0)\.?[0-9]*$ ]] || continue
    i=0
    for val in ${pokladny[@]}
    do
        [ "$val" = "$pokladna" ] && break
        i=$((i+1))
    done
    if [ -z ${pokladny[$i]} ]
    then
        pokladny[$i]=$pokladna
        penize[$i]=$castka
    else
        penize[$i]=$(echo "scale=2; ${penize[$i]} + $castka" | bc)
    fi
done

i=0
for val in ${pokladny[@]}
do
    all+="${penize[$i]} $val"$'\n'
    let i=i+1
done

[ -z "$all" ] && exit 0

echo "$all" | sort -nr | awk '\
{if (NR==1)
    highest=$1
if ( highest == $1 )
    print $2,$1}' | sort

exit 0