HOW TO FIND ACCOUNT WITH LAST CONNECTION DATE ON UNIX and LINUX

I have searched on internet many script to have account with last connection date to check out for those with more than 3 months in my servers. But I have many Unix (Solaris , HP UX, AIX ) It was very difficult to make one script for all because some command like "lastlog" on Linux daesn't exist on UNIX. So I have taken pieces of script around the internet and I have modified them to work on multiple platform. It is not really achived but it can help many administrator. Below 4 scripts:

AIX:

##################################### 
# Orphans Account
##################################### 

PASSWORD_FILE="/etc/passwd" 

print "User     |Account Locked         |Time since last login                                  | User Info                              "

for LoginID in in $(cat $PASSWORD_FILE | cut -f1 -d:)

do  

  # see if the account is locked 

  account_locked=$( awk 'BEGIN{ FS = ""; RS = ""}$1 == "'"$LoginID"':"{if (match($0,/account_locked /) ){print substr($0, RSTART+17, 5)} }' /etc/security/user ) 

  # find the secs since the epoch in seconds for the last login time 

  time_last_login_secs=$( awk 'BEGIN{ FS = ""; RS = ""}$1 == "'"$LoginID"':"{if (match($0,/time_last_login = [0-9]+/) ){print substr($0, RSTART+18, 10)} }' /etc/security/lastlog ) 

  # find the secs since the epoch in seconds for the last unsuccessful login time 

SOLARIS:

#!/usr/bin/ksh

while read LINE;do
# extract usernames and home directories from /etc/passwd

        USER=$(echo $LINE|awk -F: '{print $1}')

        HOMEDIR=$(echo $LINE|awk -F: '{print $6}')

# extract login info from finger using grep

        LAST_LOGIN=$(finger -l ${USER}|egrep  "Never logged in.|Last login")

         echo "$USER           | $HOMEDIR                            | $LAST_LOGIN"

done < /etc/passwd
exit

HP-UX

#!/usr/bin/ksh 

while read LINE;do 

# extract usernames and home directories from /etc/passwd 

        USER=$(echo $LINE|awk -F: '{print $1}') 
        HOMEDIR=$(echo $LINE|awk -F: '{print $6}') 

# extract login info from finger using grep 

        LAST_LOGIN=$(finger ${USER}|grep -E 'Last login|Never logged') 

        echo "$USER              | $HOMEDIR 

For Linux server is merely simple just enter:

lastlog