RRDLASTUPDATE(1)

✨ RRDLASTUPDATE ✨

okay so bestie, welcome to rrdlastupdate, aka the little rrdtool command that spills the tea on the most recent update to an RRD 👑 this is from the rrdtool manual, and it is literally about to tell you the freshest thing your RRD has seen.

💖 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. so yeah, it's giving receipts for the latest update, no cap ⭐

• filename — the name of the RRD that contains the data. it's the file, bestie, the actual RRD in question 💅
• --daemon, -d address — address of the rrdcached daemon. if you specify it, a "flush" command is sent to the server before reading the RRD files 🔥 this lets rrdtool 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 👀

like, for example:

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 👑 like, CLI wins, periodt.

🫶 AUTHOR 🫶

Andy Riebs <andy.riebs@hp.com> ✨

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so that's the whole vibe check, bestie 🧚 this page is from rrdtool version 1.11.0, dated 2026-10-17, and it's the RRDLASTUPDATE(1) manual page 💖 go get those timestamps, you iconic main character 🎀💅