#! /bin/sh
#
#   Filename:  msize
#
#   Programmers:  Jasen M. Lentz, Br. David Carlson
#
#   Date:  1-20-97
#
#   Revised:  12-17-87 by Br. David to run on the Linux machine
#
#   Purpose:  This program checks the size of the specified user's mail
#             queue and reports the size to the screen.  If no command-line
#             parameter is specified, it gives the size of your mail queue.
#
#   Syntax:   msize <id>
#                or
#             msize

if [ $# -eq 0 ]
then
   id=`whoami`
elif [ $# -eq 1 ]
then 
   id=$1
else
   echo "Error: cannot have more than 1 parameter."
   echo "Syntax:  msize <id>"
   echo "            or"
   echo "         msize"
   exit 1
fi

echo -n "Mail queue for $id "

if [ ! -f /var/spool/mail/$id ]
then
   echo "does not exist."
   exit 0
fi

queue="/var/spool/mail/$id"
lowerdigits=`ls -l "$queue" | cut -c 40-42 | tr -d ' '`
upperdigits=`ls -l "$queue" | cut -c 33-39 | tr -d ' '`

if [ "$lowerdigits" = "" ]
then
   lowerdigits=0
fi
if [ "$upperdigits" = "" ]
then
   upperdigits=0
fi

# Debug section:
#echo
#echo "lowerdigits :$lowerdigits:"
#echo "upperdigits :$upperdigits:"

if [ "$upperdigits" -eq 0 -a "$lowerdigits" -eq 0 ]
then
   echo "is empty."
elif [ "$upperdigits" -eq 0 ]
then
   echo "is $lowerdigits bytes." 
else
   echo "is $upperdigits KB."
   if [ "$upperdigits" -gt 1000 ]
   then
      echo "Mail queue is too large (over 1 MB)."
   fi
fi

exit 0