Notification with 2 command

[Nicola Paltani]

Hi list

I'm checking a big number of printers with my nagios server (more then 
300) , in detail i'm checking the toner level through snmp , what i need 
is to send a notification via mail when the toner is law but this 
message it must contain the model of the printers form which I get the 
error , so i have made this notification command

snmpwalk -v 1 -c public -Ov $HOSTADDRESS$ 
HOST-RESOURCES-MIB::hrDeviceDescr.1 > 
/usr/local/nagios/libexec/printername |

mail -s "** $NOTIFICATIONTYPE$ alert - $HOSTALIAS$/$SERVICEDESC$ is 
$SERVICESTATE$ **" < /usr/local/nagios/libexec/printername $CONTACTEMAIL$

the first command create a file with the printer model and the second 
send an email having as body the contents of the file

but unluckely it doesn't work , i have discovered that the “ | ” create 
some problem , with this command i receive an empty body it ignore the 
file (printername) generated, but if i divide the command in 2 separate 
and associate all of them to a specific user it works

command 1 (to create a file containing the printer model

snmpwalk -v 1 -c public -Ov $HOSTADDRESS$ 
HOST-RESOURCES-MIB::hrDeviceDescr.1 > /usr/local/nagios/libexec/printername

command 2 (send an email which have as body the contents of printername)

mail -s "** $NOTIFICATIONTYPE$ alert - $HOSTALIAS$/$SERVICEDESC$ is 
$SERVICESTATE$ **" < /usr/local/nagios/libexec/printername $CONTACTEMAIL$

The problem that i have is that it execute first the command 2 and than 
number 1 (i always receive the printer model of the previuos signaling), 
i have tried to change the name of the 2 command place a sleep in front 
of the 2nd command but with no results

how i can merge the 2 command or at least tell nagios to execute first 
command 1 and then 2

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