RRDLAST(1) rrdtool RRDLAST(1)

# [NAME](#NAME)

rrdlast - Return the date of the last data sample in an RRD

# [SYNOPSIS](#SYNOPSIS)

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

# [DESCRIPTION](#DESCRIPTION)

The **last** function returns the UNIX timestamp of the most recent update of the RRD.

[*filename*](#filename)

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

[**--daemon**|**-d** *address*](#daemon)

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](#ENVIRONMENT_VARIABLES)

The following environment variables may be used to change the behavior of "rrdtool last":

[**RRDCACHED\_ADDRESS**](#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](#AUTHOR)

Russ Wright <rwwright@home.com> Daemon support added by Steve Shipway <steve@steveshipway.org>

2026-09-01 1.11.0

---

Document: rrdlast(1) from rrdtool 1.11.0-r1 (Chainguard OS)
Source: https://github.com/oetiker/rrdtool-1.x