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SYSPATCH(8) System Manager's Manual SYSPATCH(8)

syspatch
manage base system binary patches

syspatch [
-c | -l | -r
]

syspatch is a utility to fetch, verify, install and revert OpenBSD binary patches.
When run without any options, syspatch will apply all missing patches by saving the original release kernel if needed, creating a rollback tarball containing the files it is about to replace, then extracting and installing all files contained in the syspatch tarball.
The options are as follows:
 
 
List available patches; suitable for cron(8).
 
 
List installed patches.
 
 
Revert the most recently installed patch.

/bsd.syspatch${OSrev}
Backup of the original /bsd release kernel.
/etc/installurl
OpenBSD mirror top-level URL for fetching patches.
/var/syspatch/*
Directories containing the rollback tarball and original signed diff(1) of installed patches.

signify(1), installurl(5), release(8)

syspatch first appeared in OpenBSD 6.1.

syspatch was written by Antoine Jacoutot <ajacoutot@openbsd.org>.

syspatch is designed to work solely on official OpenBSD releases.
February 7, 2017 OpenBSD-6.1