#!/bin/bash

if [ "$#" = 0 ] || [ "$1" = "--help" ]
then
    echo "Usage: $0 <file1> <file2> ..." >&2
    exit 1
fi

ret=0
for i
do
    if [ -e $i.kevert ] || ! [ -f $i ]
    then
        ret=2
        echo "Hibas parameter: $i" >&2
    else
	cat $i | while IFS="" read -r LINE
	do
	    echo "$RANDOM $LINE"
	done | sort -n | cut -d' ' -f2- >$i.kevert
    fi
done

exit $ret