ruby.rb

#!/usr/bin/ruby
require 'io/console'
def do_create_user(no,us,pw)
 pwd = pw.crypt("$5$a1")
 1.upto(no) do | x |
        uname = us + x.to_s
        result = system("useradd -m -p '#{ pwd }' #{ uname }")
        if result
                puts "#{ uname } created!"
            else
                puts "#{ uname } failed!"
        end
    end
end

print "How many users do you want? "
count = gets.chomp.to_i
print "Enter the username suffix, user, u etc... "
user = gets.chomp.downcase
print "Enter Password: "
password = STDIN.noecho(&:gets).chomp
puts "" # print an empty line
do_create_user(count,user,password)