#Pwd_Policy.sh
#Date :05-04-2008
#Credits :StrangerInMoscow 


#!/bin/bash


clear ; sleep 1

  
# Functions Area
#Main Menu

        mmenu() {
        echo "|----------------  [ Main Menu  ]  ------------------|"
   	echo " "
        echo " [1] Display the Current Password Policy for the Users "
        echo " [2] Set the New Password Aging Settings "
        echo " [3] Save and Mail a Log to the System Administrator"
        echo " [4] Quit "
    	echo " "
   	echo "______________________________________________________ "
        echo "    Please Pick a Task From the Menu to Perform  "
    	echo "______________________________________________________ "
        
	read SELECTION

#Mmenu OPTs 

        case $SELECTION in 1)
               clear &&  displayusers  ;;
                    	    2)         
        		  pwd_options ;;   
           		    3)
        		  mailadmin ;;
                     	    4 | q | Q )
        		 clear ; exit 0 ;;
			    *) 
			invalid_choice  ;;

        esac

        }

#Define a Function to Display the Current Users on the Local system
#Apply Password Settings to All Users

		chage_pwd_all(){

		for i in $(grep \\$ /etc/shadow | awk -F: '{ print $1 }'| sort)
		do
		chage -m $MIN_PWD -M $MAX_PWD -W $WARN_PWD $i

    		if [ $? != 0 ]
    		 then    
        	 echo " Operation Failed "
    		fi
		done

	}

#Apply Password Settings Only to a Specific group of Users

	chage_pwd_usr(){

		chage -m $MIN_PWD -M $MAX_PWD -W $WARN_PWD $USRS

    			if [ $? != 0 ]
    			   then    
      			   echo " Operation Failed "
    			fi
 

}



		displayusers() {

		echo "|------------------------[ Here Comes a List of Current Users on the System ]-----------------|" ; sleep 1 

		for i in $(grep \\$ /etc/shadow | awk -F: '{ print $1 }'| sort)
		do
		echo "Current Password Settings for User $i "
		echo " "
		chage -l  $i
		echo " "
		done
		echo " "
		echo " "
		echo "|--------------------------[ [M]ain Menu ]--[ [F]ilter ]--[ [Q]uit ]-------------------------|"


		read  B2MMENU

    case $B2MMENU in 	M | m  )
        clear && mmenu ;;
    			f | F ) 
	echo " " 
    	echo " Please Specify a User to Display his Info "
    	read USR_FLTR
    	clear ; 
    	chage -l $USR_FLTR ; 
    	echo " " 
	echo  "Press Any Key to Kill the Current Process & Move to the Main Menu"
    	read ACTION
    		
		case $ACTION in * )
    		clear
    		mmenu
    		esac ;;
			        Q | q )
       		echo " Bye " ; exit 0 ;;
        			*)
          	invalid_choice ;;

    esac

}


#Define Function #2##
#PWD Policy Settings To be Applied

	pwd_options()    {
	clear
	echo "|-----------------------------[In This Section you will set your Password Settings]----------------------|"
    	echo " "
    	echo " [1] Set the Minimum , Maximum and Warning Days Arguments"
    	echo " [2] Back To The Main Menu "

	read PWD_OPT
   
   	case $PWD_OPT in 1 )
        echo "Enter the minimum number of days between password changes" ; read MIN_PWD ; sleep 1
	echo "Enter the maximum number of days between password changes" ; read MAX_PWD ;sleep 1
	echo "Enter the number of days prior to the password expiring" ; read WARN_PWD ;sleep 1 
	echo "Saving ...... ";echo  "saved"  ; sleep 2 ; clear 
	echo " " 
	echo "***********************************************************************************"
	echo "!! WARNING !! You are going to Apply the Following Password Settings to Your Users " 
	echo " "
	echo "************************************ Summary **************************************"
	echo " "
	echo "	Minimum $MIN_PWD"
	echo "	Maximum $MAX_PWD"
	echo "	Warning $WARN_PWD" 
	echo " " 
	echo "***********************************************************************************"
	echo " " 
	echo "Now Tell Me What you want to do Next" 
	echo " " 
	echo "[A] Press [A] if You want to Apply the New Settings to All users       "
        echo "[B] Press [B] if You want to Apply the New Settings Only to Specific Users"
	echo "[C] Press [C] To cancel the Operation"
	read CNFRM
		case $CNFRM in a | A )
			echo " Please Hold On While Applying the Password Policy to All Users  " ; sleep 1
              		chage_pwd_all    
	       		clear ; mmenu  ;;	
				b | B )
	 echo "Please Specify the Users You want to Apply the New Settings To" 
	 read USRS
   	 	chage_pwd_usr 
	 echo " "  
	 echo "The Password Settings For the User $USRS Has been Updated "
         echo " "
	 	chage -l $USRS  ;; 
				 * )
	  	invalid_choice ;;

		esac ;;
	    
			        2)     clear ; mmenu  ;;
				*)
				invalid_choice ;;

	
 	esac

}   
	
	mailadmin()
			{
	echo " Sending Email To the System Admin .... Please Wait " ;sleep 3 
	echo "`date +%F` : The Password Policy for One or More user has been Modified " | mail -s "Password Policy script has been executed " root 2 >> /var/log/pwd_chage.errors.log 
	if [ $? !=  0 ]
	then 	
	echo "Operation Failed .... Error Logs have been saved " 
	sleep 3 ; mmenu 
	else 
	echo "Email with Logs has been Sent to the system Administrator" 
	sleep 3 ; clear ; mmenu ;
	fi
			}

	invalid_choice() {
	echo " Please Enter a Valid Value " ; sleep 1 
		echo " " 
		echo " Redirecting to the Main Menu " 	;sleep 3 ; clear ;  mmenu 
	
			}

#Calling the  Main Menu Function

mmenu

#END

http://www.4shared.com/file/43129154/53140336/pwd_policy.html