How to know before AIX will lock your user account?

I cobbled this script together, and put it in the /etc/profile (ALL my users are forced to KSH).

#!/usr/bin/perl 

######### 
##### 
## 
# pwexpire - M. Cecil
# 
# usage: pwexpire <username> 
# 
# display next password expiration on current machine for specified 
# user. Do not allow non-root user to display another's expiry. 
# 
## 
##### 
######### 

# Save off called program name for reporting errors 
$prog=$0; 
$prog=~s/.*\///; 

# What is the subject user? 
$user=$ARGV[0]; 

# What time is it now? (Not used yet... Would be for countdown-style display) 
$now=time(); 

# Check proper invocation 
if ( $#ARGV != 0 ) { 
print STDERR "usage: $prog <user>\n"; 
exit(1); 
} 

# What process called this one? 
$ppid=getppid(); 

# What user owned that process? 
$puser=`ps -F user -p $ppid | tail -1`; 
chomp($puser); 
$puser=~s/ *//; 

# If that user isn't root, and if the calling user does not match the subject 
# of the script, then bail 
if ( $puser ne "root" && $puser ne $user ) { 
print STDERR "$prog: only root is allowed to check another user's expiry.\n"; 
exit (1); 
} 

# Obtain maximum PW age of the subject user 
$maxage_in_weeks=`lsuser -a maxage $user 2>/dev/null`; 
chomp($maxage_in_weeks); 
$maxage_in_weeks=~s/.*=//; 

# if that return was nothing, then the user does not exist. 
if ( "$maxage_in_weeks" eq "" ) { 
print STDERR "$prog: $user does not exist.\n"; 
exit (1); 

# Display non-expiring status 
} elsif ( $maxage_in_weeks == 0 ) { 
print "$user - password does not expire.\n"; 

# Else, compute the next expiration 
} else { 
# Discover the last time the user updated its password. 
$lastupdate=`lssec -f /etc/security/passwd -a lastupdate -s $user`; 
chomp($lastupdate); 
$lastupdate=~s/.*=//; 

# Multiply max age in weeks times seconds per week, and add to 
# last update time. 
$maxage_in_seconds=$maxage_in_weeks*604800; 
$expire_date=$lastupdate+$maxage_in_seconds; 
my $expire=localtime($expire_date); 

# And, show the result. 
print "$user - expires on ${expire}.\n"; 
} 

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