Checking password expiration on Solaris using Script

# Copy /etc/shadown to temp directory (I am copying to /home/ramkumar and delete   #after) 

#!/usr/bin/bash

if [ $# -eq 0 ]

   then

    echo "You need to pass user as argument"

    exit 1

fi

COUNT=`grep $1 /home/ramkumar/shadow|wc -l`

if [ $COUNT != 1 ]

  then

  echo "User is not valid"

  exit 1;

fi

CURRENT_CH=`grep $1 /home/ramkumar/shadow | cut -d: -f3`

HOST=`uname -n`

LAST_CHA=`/bin/perl -e 'print int(time/(60*60*24))'`

# Compute the age of the user's password

AGE=`echo $LAST_CHA - $CURRENT_CH | /usr/bin/bc`

echo "last Changed" $AGE " days ago"

# Password expiration

EXPIRE=`echo 90 - $AGE | /usr/bin/bc`

if [ $EXPIRE -lt 0 ]

  then

   EXP=`echo $EXPIRE|sed 's/-//g'`

    echo "$1 password on $HOST expired  $EXP days ago"

  else

    echo "$1 password on $HOST expires in $EXPIRE days"

fi