SO - Bash Script #3

#! /bin/bash

if [ $# -lt 1 ]
then
    echo "Usage: $0 <file> <n1, n2, ...>"
    exit 1
fi

nr=0
s=0
k=0

if [ -f $1 -a ! -L $1 ] # e ok, merge mai departe
then
    while read n
    do
        rez=`echo $n | grep -Eo '[0-9]+'`
        if [ ! -z "$rez" ] # rezultatul nu e string gol (-z)
        then
            nr=$rez
            break
        fi
    done < $1

    echo "$nr"

    if [ $nr -eq 0 ]
    then
        echo "number not found"
        exit 1
    else
        for i in "${@:2}" # prin toate argumentele, incepand cu al 2-lea
        do
            if [ $(($i % $nr)) -eq 0 ]
            then
                k=$(($k + 1))
            fi

            s=$(($s + ${#i})) # suma cifrelor
        done
    fi
else
    echo "$1 not a regular file"
    exit 1
fi

echo "$k numere divizible cu $nr"
echo "suma cifrelor $s"