RRDLAST(1) rrdtool RRDLAST(1)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>
1.4.3 2008-09-25 RRDLAST(1)
Check Out this Related Man Page
RRDFLUSHCACHED(1) rrdtool RRDFLUSHCACHED(1)NAME
rrdflushcached - Flush the values for a spcific RRD file from memory.
SYNOPSIS
rrdtool flushcached [--daemon address] filename [filename ...]
DESCRIPTION
The flushcached function connects to rrdcached, the RRD caching daemon, and issues a "flush" command for the given files. The daemon will
put the files to the head of the update queue so they are written "soon". The status will be returned only after the files' pending updates
have been written to disk.
filename
The name(s) of the RRD file(s) that are to be written to disk.
--daemon address
Address of the rrdcached daemon. If not specified, the RRDCACHED_ADDRESS environment variable must be set (see below). For a list
of accepted formats, see the -l option in the rrdcached manual.
rrdtool flush --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 flushcached":
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
Florian Forster <octo at verplant.org>
1.4.3 2009-10-14 RRDFLUSHCACHED(1)
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