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TCLRRD -- A TCL interpreter extension to access the RRD library,

contributed to Tobias Oetiker's RRD tools.

Copyright (c) 1999,2000 Frank Strauss, Technical University of Braunschweig.

See the file "COPYING" for information on usage and redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.

TCLRRD adds a dynamically loadable package to the Tcl 8.x interpreter to access all RRD functions as of RRDtool 1.0.13. All command names and arguments are equal to those of RRDtool. They are assigned to the namespace `Rrd', e.g. `Rrd::create'. Return values are a bit different from plain RRDtool behavior to enable more native Tcl usage. Errors are mapped to the TCL_ERROR return code together with the RRD error strings.

TCLRRD makes it easy to combine RRD use with advanced SNMP functionality of scotty ( E.g., it's easy to use some scotty code to get the counters of some interfaces by their interface name and then use Rrd::update to store the values. Furthermore, data source types (see RRD::create documentation) and integer value ranges could be easily retrieved from MIB information.

TCLRRD has been written on a Linux system for use with Tcl 8.x. It should work on many other platforms, although it has not been tested. There are no fool proof installation procedures. Take a look at and adapt it, if required.

TCLRRD has been written for RRD 1.0.13.

Frank Strauss <>, 09-Mar-2000

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