BASH script for generating complex password

Description:
This script can be used to generate complex password with predefined password length.

Script:
#!/bin/bash

#Filename : randompass.sh

#Sets the length of the password the script will generate

echo -n "Enter the password length that you require : "
read MAXSIZE

# Holds valid password characters. I choose alpha-numeric + the shift-number keyboard keys

# I put escape chars on all the non alpha-numeric characters just for precaution

array1=(

w e r t y u p a s d f h j k z x c v b m Q W E R T Y U P A D

F H J K L Z X C V B N M 2 3 4 7 8 ! @ $ % \# \& \* \= \- \+ \?

)

# Used in conjunction with modulus to keep random numbers in range of the array size

MODNUM=${#array1[*]}

# Keeps track of the number characters in the password we have generated

pwd_len=0

while [ $pwd_len -lt $MAXSIZE ]

do

  index=$(($RANDOM%$MODNUM))

  password="${password}${array1[$index]}"

  ((pwd_len++))

done

echo $password

Sample Execution: 
[root@sysllm01 create_password]# sh random_pass.sh

Enter the password length that you require : 10

D34EXL*3@$
[root@sysllm01 create_password]#

Cool stuff right :)