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.IX Title "RRDLAST 1"
.TH RRDLAST 1 2024-03-17 1.7.2 rrdtool
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.nh
.SH NAME
rrdlast \- Return the date of the last data sample in an RRD
.SH SYNOPSIS
.IX Header "SYNOPSIS"
\&\fBrrdtool\fR \fBlast\fR \fIfilename\fR
[\fB\-\-daemon\fR|\fB\-d\fR\ \fIaddress\fR]
.SH DESCRIPTION
.IX Header "DESCRIPTION"
The \fBlast\fR function returns the UNIX timestamp of the most recent
update of the RRD.
.IP \fIfilename\fR 8
.IX Item "filename"
The name of the \fBRRD\fR that contains the data.
.IP "\fB\-\-daemon\fR|\fB\-d\fR \fIaddress\fR" 8
.IX Item "--daemon|-d address"
Address of the rrdcached daemon. If specified, a \f(CW\*(C`flush\*(C'\fR command is sent
to the server before reading the RRD files. This allows \fBrrdtool\fR 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 \fB\-l\fR option in the rrdcached manual.
.Sp
.Vb 1
\& rrdtool last \-\-daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd
.Ve
.SH "ENVIRONMENT VARIABLES"
.IX Header "ENVIRONMENT VARIABLES"
The following environment variables may be used to change the behavior of
\&\f(CW\*(C`rrdtool\ last\*(C'\fR:
.IP \fBRRDCACHED_ADDRESS\fR 4
.IX Item "RRDCACHED_ADDRESS"
If this environment variable is set it will have the same effect as specifying
the \f(CW\*(C`\-\-daemon\*(C'\fR option on the command line. If both are present, the command
line argument takes precedence.
.SH AUTHOR
.IX Header "AUTHOR"
Russ Wright <rwwright@home.com>
Daemon support added by Steve Shipway <steve@steveshipway.org>