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Calling RRDTool from script
Calling RRDTool from script
- Hi All!
I'm trying to call RRDTool from a powershell script but doesn't work as expected:
I've got four integers named $Count $Abort $Active $Commit
The syntax to add values into the round robin db of RRDTool with four values is: rrdtool update N:value1:value2:value3:value4
I call rrdtool as this: & rrdtool update N:$Count:$Abort:$Active:$Commit
rrdtool thinks it gets the argument: N:$Commit as if & rrdtool update N:$Commit
I've tried all kind of different combinations of ', " ,`,´ to get it right...
Please, what is wrong?
Answers
- Can you be more specific with what the variables contain?
If might help to try it like this:
PS>& rrdtool update N:${count}:${abort}:${active}:${commit}
If you're still stuck, I can maybe try it later this week.- Marked As Answer byMarco ShawMVP, ModeratorSunday, November 08, 2009 1:32 PM
All Replies
- Can you be more specific with what the variables contain?
If might help to try it like this:
PS>& rrdtool update N:${count}:${abort}:${active}:${commit}
If you're still stuck, I can maybe try it later this week.- Marked As Answer byMarco ShawMVP, ModeratorSunday, November 08, 2009 1:32 PM
- Great, that worked.
So what's the business with the {}'s? - It basically allows you to properly delimit your variable names.
If you simply say $foo:$bar, the PowerShell parser doesn't see this as variables $foo and $bar, it doesn't know whether the ":" is meant to be part of the variable name or not.
