53 lines
1.2 KiB
Plaintext
53 lines
1.2 KiB
Plaintext
=head1 NAME
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rrdlast - Return the date of the last data sample in an RRD
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=head1 SYNOPSIS
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B<rrdtool> B<last> I<filename>
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S<[B<--daemon>|B<-d> I<address>]>
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=head1 DESCRIPTION
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The B<last> function returns the UNIX timestamp of the most recent
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update of the RRD.
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=over 8
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=item I<filename>
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The name of the B<RRD> that contains the data.
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=item B<--daemon>|B<-d> I<address>
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Address of the L<rrdcached> daemon. If specified, a C<flush> command is sent
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to the server before reading the RRD files. This allows B<rrdtool> to return
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fresh data even if the daemon is configured to cache values for a long time.
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For a list of accepted formats, see the B<-l> option in the L<rrdcached> manual.
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rrdtool last --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd
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=back
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=head1 ENVIRONMENT VARIABLES
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The following environment variables may be used to change the behavior of
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C<rrdtoolE<nbsp>last>:
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=over 4
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=item B<RRDCACHED_ADDRESS>
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If this environment variable is set it will have the same effect as specifying
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the C<--daemon> option on the command line. If both are present, the command
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line argument takes precedence.
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=back
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=head1 AUTHOR
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Russ Wright <rwwright@home.com>
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Daemon support added by Steve Shipway <steve@steveshipway.org>
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