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Custom Sensor - bash script



I installd cygwin to use bash scripts on the Windows machine, where i testing PRTG.

For a custom sensor i made a batch file called bash.bat

@echo off
FOR /F "tokens=*" %%a in ('c:\cygwin64\bin\bash.exe -c "/usr/local/bin/%1 %2') do SET OUTPUT=%%a
echo %OUTPUT%

The first argument is the name of the bash script located in c:\cygwin64\usr\local\bin\ The second argument can be a IP address

My first script "brother-toner.sh" use snmpwalk to collect information from a brother printer and calculate the toner level

FULL=`snmpwalk -v1 -c public $1 ..some oid path...`
LEFT=`snmpwalk -v1 -c public $1 ..some oid path...`
LEVEL=$((${FULL: -1}*100/${LEFT: -1}))
echo $OUTPUT

if i run "bash.bat" from terminal i get something like

But PRTG don't get the value (66)

If i set the value e.g in bash script (OUTPUT="66:Black") or in bat file (echo 66:Black) it works.

Strange but also works: "echo 10%OUTPUT%" -> value in PRTG is 10

Encoding missmatch?

bash cygwin script

Created on Mar 7, 2014 4:35:27 PM

Last change on Mar 7, 2014 4:47:44 PM by  Torsten Lindner [Paessler Support]

1 Reply




thank you very much for your KB-Post. Did you already try to implement a bit of logging into the scripts, so that you can see what exactly is passed on to the batch file (when executed via PRTG)?

best regards

Created on Mar 10, 2014 9:24:10 AM by  Torsten Lindner [Paessler Support]

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