NAME¶
rrdlast - Return the date of the last data sample in an RRD
SYNOPSIS¶
rrdtool last filename [
--daemon address]
DESCRIPTION¶
The
last function returns the UNIX timestamp of the most recent update of
the RRD.
- filename
- The name of the RRD that contains the data.
- --daemon address
- Address of the rrdcached daemon. If specified, a "flush" command
is sent to the server before reading the RRD files. This allows
rrdtool to return fresh data even if the daemon is configured to
cache values for a long time. For a list of accepted formats, see the
-l option in the rrdcached manual.
rrdtool last --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd
ENVIRONMENT VARIABLES¶
The following environment variables may be used to change the behavior of
"rrdtool last":
- RRDCACHED_ADDRESS
- If this environment variable is set it will have the same effect as
specifying the "--daemon" option on the command line. If both
are present, the command line argument takes precedence.
AUTHOR¶
Russ Wright <rwwright@home.com>