LASTLOG2(3)

📦
version 2.41.6 · 9 versions
, in alpine 3.22, alpine 3.23, fedora 43, fedora 44

💖 LASTLOG2 — the iconique, Y2038-safe lastlog library 💖

okay bestie, so this whole page is LASTLOG2(3) from the Programmers Manual section — like, it's a library page, not a command, so no shell shenanigans here, just vibes and function calls 🎀

✨ NAME ✨

lastlog2 — the Y2038 safe version of the lastlog library. no cap, she's built different 🕰️✨

🦋 SYNOPSIS 🦋

#include <lastlog2.h>

that's it, that's the whole vibe check. one include and you're in 💅

🌸 DESCRIPTION 🌸

so lastlog2 reports the last login of a given user, or of all the users who did ever login on a system. it's giving "who's been here and when" energy 👑

It's using sqlite3 as the database backend — yes bestie, sqlite, we love a lowkey reliable queen 💜

Data is only collected via a PAM module, so that all tools can make use of it, without modifying existing packages. like, everyone eats from the same table, nobody has to rebuild their whole plate 🫶

The output is as compatible as possible with the old lastlog implementation — so if you're migrating, she's not gonna show up in a completely different outfit, she's matching the old aesthetic ✨

By default, the database will be written as /var/lib/lastlog/lastlog2.db.

And here's the part that ate: the size of the database depends on the amount of users, not how big the biggest UID is. literally no bloat, no giant-UID problems, just proportionate slay 💅🔥

ngl this is the whole "Y2038 safe" moment — the old one was out here with timestamps that weren't gonna age well, and this one's like "not me, I'll be fine" 😭

👑 AUTHORS 👑

Thorsten Kukuk <kukuk@suse.de> — the main character who made this happen, we stan 🎀

🎀 SEE ALSO 🎀

the whole friend group, fr fr:

(yes lastlog2(3) is in its own SEE ALSO. self-love, iconic, no notes 🙈)

💀 REPORTING BUGS 💀

For bug reports, use the issue tracker: https://github.com/util-linux/util-linux/issues

please be nice to the maintainers, they're doing their best 🫶

🌈 AVAILABILITY 🌈

The liblastlog2 library is part of the util-linux package since version 2.40. It can be downloaded from the Linux Kernel Archive: https://www.kernel.org/pub/linux/utils/util-linux/

and that's the whole page bestie — this was util-linux 2.41.6, dated 2026-08-31, dropping on LASTLOG2(3) like the baddie she is. 💖✨🧚‍♀️

📦 where this page comes from