Problemas Nagios * Exibir Resposta*

Boa Tarde pessoal...
Estou tendo um problema com o Nagios, Fiz um script, que na linha de 
comando ele funciona, Más quando coloco para o Nagios monitorar ele da 
mensagem de Null e fica verde, Alguem pode me ajudar???
Segue o script, (Este script server para pegar a memoria total do PC / 
free -mt, e transforma em porcentagem.
###################################################################
# Script to check real memory usage                       
# L.Henrique 07/06/10 - V.2.0                             
# ------------------------------------------              
# ########  Script Modifications  ##########              
# ------------------------------------------              
#!/bin/bash                                               
USAGE="`basename $0` [-w|--warning]<percent free> 
[-c|--critical]<percent free>"
THRESHOLD_USAGE="WARNING threshold must be greater than CRITICAL: 
`basename $0` $*"
calc=/tmp/totalcalc                                                                

percent_free=/tmp/freepercent                                                      

critical=""                                                                        

warning=""                                                                         

STATE_OK=0                                                                         

STATE_WARNING=1                                                                    

STATE_CRITICAL=2                                                                   

STATE_UNKNOWN=3                                                                    

# print 
usage                                                                     
if [[ $# -lt 4 
]]                                                                 
then                                                                               

        echo 
""                                                                   
        echo "Wrong Syntax: `basename $0` 
$*"                                     
        echo 
""                                                                   
        echo "Usage: 
$USAGE"                                                      
        echo 
""                                                                   
        exit 
0                                                                    
fi                                                                                 

# read 
input                                                                      
while [[ $# -gt 0 
]]                                                              
do                                                                                 

case "$1" 
in                                                                      
-w|--warning)                                                                      

shift                                                                              

warning=$1                                                                         

;;                                                                                 

-c|--critical)                                                                     

shift                                                                              

critical=$1                                                                        

;;                                                                                 

esac                                                                               

shift                                                                              

      
done                                                                         

# verify 
input                                                                    
if [[ $warning -eq $critical || $warning -lt $critical 
]]                         
then                                                                               

              echo 
""                                                             
              echo 
"$THRESHOLD_USAGE"                                             
              echo 
""                                                             
              echo "Usage: 
$USAGE"                                                
              echo 
""                                                             
exit 
0                                                                             

fi                                                                                 

# Total memory 
available                                                          
total=`free -mt | grep 'Total:' | awk '{print 
$3}'`                               
# Total memory 
used                                                               
used=`free -mt | grep 'Total:' | awk '{print 
$2}'`                                
# Calc total minus 
used                                                           
free=`free -mt | grep 'Total:' | awk '{print 
$2-$3}'`                             
# normal 
values                                                                   
#echo "$total"MB 
total                                                            
#echo "$used"MB 
used                                                              
#echo "$free"MB 
free                                                              
# make it into % percent free = ((used  /  total) * 
100)                          
              echo "5" > $calc # decimal 
accuracy                                 
              echo "k" >> $calc # commit
              echo "100" >> $calc # multiply
              echo "$total" >> $calc # division integer
              echo "$used" >> $calc # division integer
              echo "/" >> $calc # division sign
              echo "*" >> $calc # multiplication sign
              echo "p" >> $calc # print
percent=`/usr/bin/dc $calc|/bin/sed 's/^\./0./'|/usr/bin/tr "." " 
"|/usr/bin/gawk {'print $1'}`
#percent1=`/usr/bin/dc $calc`
#echo "$percent1"
if [[ "$percent" -le  $critical ]]
          then
                  echo "CRITICAL-$free MB Free ($percent% Used Memory)"
                  exit 0
fi
if [[ "$percent" -le  $warning ]]
          then
                  echo "WARNING-$free MB Free ($percent% Used Memory)"
                  exit 0
fi
if [[ "$percent" -gt  $warning ]]
          then
                  echo "OK-$free MB Free ($percent% Used Memory)"
                  exit 0
###################################################################
Command.cfg

#Teste ckeck_mem
define command{
        command_name    check_mem
        command_line    $USER1$/check_mem -w $ARG1$ -c $ARG2$
}

###################################################################
Erro Nagios:

Memoria Real 
<http://bio00378/nagios/cgi-bin/extinfo.cgi?type=2&host=localhost&service=Memoria+Real> 


	

	OK 	06-08-2010 15:08:55 	0d 0h 16m 52s 	1/4 	(null) 



-- 
- ________________________________
Luis Henrique
Tecnologia da Informação
Bionexo do Brasil
55 11 3133-8110
[email protected]

www.bionexo.com.br
Av.: Luiz Carlos Berrini, 936, 
12° andar Novo Brooklin - São Paulo - SP


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