#!/bin/bash

DEF_LEN=25

security()
{
	sec=$(echo "scale=1; $1*5.8" | bc)
}

if [ $# -gt 0 ]; then
	if [ "$1" -gt 64 ]; then
		echo "Make it 1..64, default is $DEF_LEN"
		exit 1
	else
		LEN="$1"
	fi
else
	LEN=$DEF_LEN
fi

security $LEN
PWD=$( pwgen -B -s $LEN 1 )
echo "Password: $PWD ("$sec"-bit security)"