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This script with an exception list will check the percent usage of each filesystem, and you can also use wildcards.

root@aixserver - /opt/freeware/lib/nagios/plugins > cat MY_checkfs.cfg
#fs_name:pct_warning:pct_critical
# You can add exception in this file, else the default is used
#Example:
#/db*:98:100   , 98 and 100 whill be used for all filesystems /db*
#default:90:95
/tmp:80:95
/usr:96:98
/opt:95:98
/cdrom:100:100
/mnt:100:100

root@aixserver - /opt/freeware/lib/nagios/plugins > cat MY_checkfs.sh

#!/usr/bin/ksh93
#set -x
##################################################
#@(#) send an alert if filesystems usage is higher than threshold
##################################################
# associate file is checkfs.cfg (exceptions)
# please do not modify this script use checkfs.cfg
# checkfs.cfg format:
# fs_name:pctwarning_threshold:pctcritical_threshold
# version: 1.1 10-02-2014 Manu
##################################################

dir=`dirname $0`
#. $dir/.env
sn=`basename $0 | cut -d. -f1`

configfile=/opt/freeware/lib/nagios/plugins/$sn.cfg
logpath=/tmp
logname=$logpath/$sn.log
tmpcfg=$logpath/$sn.txt
tmpscript=$logpath/$sn.scr
nb_file=25
nb_dir=15
DATE=$(date +"%Y-%m-%d %H:%M")

STATE_OK=0
STATE_WARNING=1
STATE_CRITICAL=2
STATE_UNKNOWN=3
STATE_DEPENDENT=4

#echo "$sn: $DATE" > $logname

#------------------------------------------------
# generate_case_file ()
#------------------------------------------------
generate_case_file()
{
pctwarn_def=$(grep "^#default" $configfile | cut -d":" -f2)
pctcrit_def=$(grep "^#default" $configfile | cut -d":" -f3)
cat $configfile | grep -v "^ *#" | sed '/^$/d' > $tmpcfg
cat $tmpcfg | awk -F':' '{print $1") pctwarn="$2" pctcrit="$3}' | sed '/^$/d;$G' | sed '$s/^/\*\)\ pctwarn=pctwarn_def\ pctcrit=pctcrit_def /' | sed "s/pctwarn_def/$pctwarn_def/" | sed "s/pctcrit_def/$pctcrit_def/" | sed '2,$s/^/\\n/' | sed 's/$/;;/' > $tmpcfg
}

#------------------------------------------------
# check_fs ()
#------------------------------------------------
check_fs()
{
EXIT_CODE=0
MSG_WARN=""
MSG_CRIT=""
OUTPUT="All filesystems OK"
clauses=$(cat $tmpcfg)
for i in $(df -k | egrep -v "Filesystem|:|/proc" | grep -v ":" | grep "/dev/" | awk '{print $4 $7}')
do
  fs=`echo $i | cut -f 2 -d%`
  pct_fs=`echo $i | cut -f 1 -d%`
  mail=""
  cmd="case $fs in \n $clauses                      \n esac"
  echo $cmd > $tmpscript
  . $tmpscript > /dev/null
  if [ $pct_fs -gt $pctwarn ]
  then
    if [ $pct_fs -gt $pctcrit ]
    then
      MSG_CRIT="$MSG_CRIT $fs used $pct_fs"
      EXIT_CODE=$(echo $STATE_CRITICAL)
    else
      MSG_WARN="$MSG_WARN $fs used $pct_fs"
      if [ $STATE_WARNING -gt $EXIT_CODE ]
      then
        EXIT_CODE=$(echo $STATE_WARNING)
      fi
    fi
    #info_fs >> $logname 2>&1 &
  fi
done

if [ "$MSG_CRIT" != "" ]
then
  OUTPUT="DISK CRITICAL - $MSG_CRIT"
fi
if [ "$MSG_WARN" != "" ]
then
  if [ "$MSG_CRIT" != "" ]
  then
    OUTPUT="$OUTPUT -- DISK WARNING - $MSG_WARN"
  else
    OUTPUT="DISK WARNING - $MSG_WARN"
  fi
fi
rm $tmpcfg $tmpscript > /dev/null 2>&1
}

#------------------------------------------------
# info_fs ()
#------------------------------------------------
info_fs()
{
echo "####### Here are the $nb_file biggest files from filesystem $fs"
find $fs  -xdev -type f -ls | sort +6nr | head -$nb_file
echo "\n####### Here are the $nb_dir biggest directories from filesystem $fs"
du -ms $fs/* | sort -nr | head -$nb_dir
}

generate_case_file #>> $logname 2>&1
check_fs #>> $logname 2>&1
echo $OUTPUT
exit $EXIT_CODE