---
name: "rrdlastupdate"
section: "1"
platform: "linux"
package: "rrdtool"
version: "1.11.0-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/rrdlastupdate"
---

# rrdlastupdate(1)

Return the most recent update to an RRD

## NAME

rrdlastupdate - Return the most recent update to an RRD

## SYNOPSIS

**rrdtool** **lastupdate** *filename* \[**--daemon**\|**-d** *address*\]

## DESCRIPTION

The **lastupdate** function returns the UNIX timestamp and the value stored for each datum in the most recent update of an RRD.

- *filename*

  The name of the **RRD** that contains the data.

- **--daemon**\|**-d** *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 lastupdate --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 lastupdate"`:

- **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

Andy Riebs \<andy.riebs@hp.com\>