PASSFILE="/etc/open***/psw-file"
LOG_FILE="/etc/open***/open***-password.log"
TIME_STAMP=`date "+%Y-%m-%d %T"`
###########################################################
if [ ! -r "${PASSFILE}" ]; then
 echo "${TIME_STAMP}: Could not open password file \"${PASSFILE}\" for reading." >> ${LOG_FILE}
 exit 1
fi
CORRECT_PASSWORD=`awk '!/^;/&&!/^#/&&$1=="'${username}'"{print $2;exit}' ${PASSFILE}`
if [ "${CORRECT_PASSWORD}" = "" ]; then
 echo "${TIME_STAMP}: User does not exist: username=\"${username}\", password=\"${password}\"." >> ${LOG_FILE}
 exit 1
fi
if [ "${password}" = "${CORRECT_PASSWORD}" ]; then
 echo "${TIME_STAMP}: Successful authentication: username=\"${username}\"." >> ${LOG_FILE}
 exit 0
fi
echo "${TIME_STAMP}: Incorrect password: username=\"${username}\", password=\"${password}\"." >> ${LOG_FILE}

exit 1

#!/bin/bash
IP_PRE=10.8.0.
FILE_PRE=client
for i in {1..64}
do
file_name=$FILE_PRE$i
ip_end1=$(($i*4-3))
ip_end2=$(($i*4-3+1))
ip1=$IP_PRE$ip_end1
ip2=$IP_PRE$ip_end2
echo "ifconfig-push $ip1 $ip2" > $file_name
done

IP_PRE1=10.8.1.
for i in {1..64}
do
file_name=$FILE_PRE$(($i+64))
ip_end1=$(($i*4-3))
ip_end2=$(($i*4-3+1))
ip1=$IP_PRE1$ip_end1
ip2=$IP_PRE1$ip_end2
echo "ifconfig-push $ip1 $ip2" > $file_name
done