KEYGEN - the path to a program used to generated random passwords (e.g. sequences of ASCII characters). For this, I use the dns-keygen program for the generation of DNSSEC keys that comes with BIND 9. Automatic password generation is discussed more below

#!/bin/bash

path=/bin:/usr/bin:/usr/local/bin

pwdlen=$1

char=(0 1 2 3 4 5 6 7 8 9 a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ! @ \# $ % ^ \&)

max=${#char[*]}

for i in `seq 1 $pwdlen`
do
        let rand=${RANDOM}%${max}
        str="${str}${char[$rand]}"
done
echo $str