duck

#!/bin/sh
#
# check for users with lots of disk space used
#
MINUSERID=1000		# where your uids start
			# (lowest "regular user")
MAXSIZE=10240		# max number of 512 byte blocks for trigger
			# (10240 blocks = 5 megabytes)
#
# uncomment only one of the following two lines:
# PASSWD="cat /etc/passwd"	# if not using NIS
PASSWD="ypcat passwd"		# if using NIS

HOST=`hostname`
TMP=/tmp/duck.$$
rm -f $TMP

if [ -f /vmunix ]; then		# get Berkeley df(1)
   DFCOMMAND=/bin/df		# if SunOS
else
   DFCOMMAND=/usr/ucb/df	# if SVR4
fi

touch $TMP
for i in `$PASSWD | awk -F: '{if ($3 > '$MINUSERID') print $6}'`
do
   cd $i
   x=`$DFCOMMAND . | grep "^/"`
   if [ "$x" != "" ]; then	# if local to this host
      size=`du -s . | awk '{print $1}'`
      if [ $size -gt $MAXSIZE ]; then
         echo "$i ($size)" >>$TMP
      fi
   fi
done

n=`wc -l $TMP | awk '{print $1}'`
if [ $n -gt 0 ]; then
   echo " "
   echo "User directories on $HOST larger than $MAXSIZE 512-byte blocks:"
   echo " "
   sed 's/^/     /' $TMP
   echo " "
fi

rm -f $TMP

