Bulk-create linux users with auto-generated password.

build-auto-adduser-script.sh

#!/bin/bash
for userlist in `cat userlist.txt`
do
  user=`echo $userlist | cut -f 1 -d ,`
  pwd=`echo $userlist | cut -f 2 -d ,`
  echo "useradd -m -s /bin/bash $user && echo $user:$pwd | chpasswd"
done

create-userlist.sh

#!/bin/bash
count=1
while [ $count -le 12 ]
do 
  password=`date|md5sum|head -c 8`
  echo "guestuser$count,$password"
  ((count++))
  sleep 1
done