[rrd-users] RRDtool Pipe Transaction Delimiter

Larry Adams larryjadams at comcast.net
Mon Aug 10 17:31:12 CEST 2009


I am writing a function in PHP that opens a bi-directional process to 
rrdtool using the syntax:

rrdtool -

As everyone is pretty much aware, this open a pipe that can receive 
commands from standard in and echo back on standard out.

However, I wanted to confirm what character steam should be used to 
confirm that an entire package has been received from the rrdtool pipe.  
At the moment, I am using either of the following two substring matches:


Is this sufficient?  Are there any other substring matches that tell me 
that the command has completed?

Thanks in Advance,

Larry Adams
TheWitness @

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