UNIX_UPDATE(8)

📦
version 1.7.2 · 15 versions
, in fedora 44

💅 UNIX_UPDATE(8) — like, the Linux-PAM Manual, but make it make sense

okay bestie, so this is UNIX_UPDATE(8) from the Linux-PAM Manual and I need you to understand that this little guy is not for you. Not for me. Not for anyone with a shell prompt and a dream. It's an internal bestie. A backstage pass. A secret handshake. 🎀

✨ NAME ✨

unix_update</purl> — the helper binary that updates the password of a given user 🫶

🌸 SYNOPSIS 🌸

unix_update [...]

💖 DESCRIPTION 💖

so basically, unix_update is a helper program for the pam_unix module that updates the password of a given user. that's its whole job. its one (1) task. its moment. 💅

and listen — it is not intended to be run directly from the command line, and if you do it anyway, it logs a security violation. like, it will snitch on you. immediately. no hesitation. 😭

the purpose of the helper is to enable tighter confinement of login and password changing services. so it's giving "I'm here for security reasons, not for vibes." and the helper is only called when SELinux is enabled on the system. no SELinux, no helper. that's the rule. ✨

also the interface of the helper — the command line options and the input/output data format — is internal to the pam_unix module. meaning: it should not be called directly from applications. periodt. 🚫

ngl this is an internal-only situation. the way that it's not for direct consumption at all. if you're an application trying to call this, bestie, no. 🙈

🦋 SEE ALSO 🦋

👑 AUTHOR 👑

Written by Tomas Mraz and other various people. iconic collaboration honestly. 🌈

💖 that's the whole page, you ate it, you're welcome 💖

and a lil sign-off from the source, no cap: this is Linux-PAM, dated 07/08/2026. 🎀🦋✨

📦 where this page comes from