how to read password information on the AIX - AIX

me_haroon · #1 06-27-2006

Hi,
Does any body know how to read password information attributes of the user like minimun expire date, max expire date, warning date on the AIX machine.

Actually i need to show a appropriate message to the user by reading data from USER file in AIX where the information related to user password is stored the links for the details is http://www.unet.univie.ac.at/aix/fil...htm#MNM220frit

Please suggest me how can it be done ASAP.

bootnix · #2 06-28-2006

Suggest trying the lsuser command, syntax:

lsuser someuser

To make things easier one entry per line:

lsuser someuser | tr " " "\n"

For system defaults use:

lsuser default

To see when user last updated their password (in Unix time - seconds elapsed since Jan 1 1970), issue (as root or member of the security group):

pwdadm -q someuser

Minage, maxage etc. are expressed in weeks, so minage=1 means that the user must wait at least 1 week between changing passwords. Password warn expressed in days.

bOOtnix

me_haroon · #3 06-28-2006

Hi,

The information of the password ageing of an user is stored in /etc/security/user file in AIX and the format in which the attributes are stored are in text format please look into this link for more detrails :

http://www.unet.univie.ac.at/aix/fil...htm#MNM220frit

The actual problem is I dont know how to write shell scripts to read selected data from the text file. I want minage, maxage, expires attribute data from the /etc/security/user.

Can anybody help me the shellscript that accomplishes this job.

Thanks
Haroon

grial · #4 06-29-2006

Hi.
Here you are one very rudimentary way to do what you want:

Code:

#!/bin/bash


FILE=/etc/security/user

USR="${1}:"

cat $FILE | while read l; do
   if [[ $FOUND = true ]]; then
      if [[ $l != "" ]]; then
         FIELD=$(echo $l | awk '{print $1}')
         case $FIELD in
         minage)
            VALUE=$(echo $l | awk '{print $3}')
            echo "   ${FIELD}: $VALUE";;
         maxage)
            VALUE=$(echo $l | awk '{print $3}')
            echo "   ${FIELD}: $VALUE";;
         expires)
            VALUE=$(echo $l | awk '{print $3}')
            echo "   ${FIELD}: $VALUE";;
         esac
      else
         FOUND=false
      fi
   fi
   if [[ $l = $USR ]]; then
      echo "$USR"
      FOUND=true
   fi
done

This script reads the file line by line searching for the user. Once the user has been found, continues reading and searching for the fields you are interested in, and if they're found, prints them and their value. Then continues reading till the EOF.

There are, for sure, better ways to do it, but that's a starting point, don't you think?

Regards.

me_haroon · #5 06-29-2006

Hi,

I wanna run "lsuser -c -a minage maxage pwdwarntime ALL" and "awk 'match($0,"username@email.com") == 0 {print $0}' FILENAME > NEWFILENAME" in a shell script. I dont know how to run this AIX commands in a shell script. Can anyone please tell me how is this to be done.

Thanks
Haroon

grial · #6 06-29-2006

But, what do you want to do?
Give us an example.

me_haroon · #7 06-29-2006

Hi,

I am doing a project on password aging to display the warning message to the user from front end i need to get information of password saying when the password expires etc. In order to read data of shadow file the user should be a "Root", which he is not. Hence i run a shell script by scheduling it into a CRON tab which collects the password information for all the users into a temporary file. THen i read data from the temporary file and display the appropriate mesasge to the user.
Hence i am thinking that
lsuser -c -a minage maxage pwdwarntime ALL" and
"awk 'match($0,"username@email.com") == 0 {print $0}' FILENAME > NEWFILENAME"

this commands will write required data to temporary file in the script.

Main Aim is to read username,minage,maxage,pwdwarntime from /etc/security/user and write to temporary file with semi colon separated format
username:minage:maxage:pwdwarntime

Please suggest me can it be done or their any other ways to do that.

Thanks
Haroon

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