Description:
This script updates host config-files, for those which contain snmpif-*
RRDs, by fetching the ifAlias OID via SNMP and re-writing the configuration
file if any of the descriptions have changed. I'd suggest running it every
now and then, say once a day, unless you're making very frequent changes to
the descriptions.
If somebody has gear which uses an OID other than ifAlias to store the
description, then I'll have to consider making this more general, but
it'll do for now.
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