systemd-knowledge-patch
systemd Knowledge Patch (v255--v260)
Claude knows systemd unit files, journalctl, systemctl, and basic service management through systemd 254. This skill covers systemd v255 (December 2023) through v260 (February 2026).
Index
| Topic | Reference | Key features |
|---|---|---|
| Breaking Changes | references/breaking-changes.md | cgroup v1 removed, SysV init removed, journal default persistent, IPForward deprecated, uaccess rules |
| Unit File Settings | references/unit-file-settings.md | PrivatePIDs, ProtectControlGroups, BindNetworkInterface, MemoryTHP, RestartMode=debug, DeferReactivation |
| journald & networkd | references/journald-and-networkd.md | Invocation tracking, ForwardToSocket, MobileNetwork section |
Breaking Changes at a Glance
| Change | Version | Impact |
|---|---|---|
| cgroup v1 removed | v258 | Only cgroup v2 (unified hierarchy) supported |
| SysV init scripts removed | v260 | systemd-sysv-generator, rc-local.service gone; native units required |
!! ExecStart prefix removed |
v258 | Ambient capabilities compat prefix silently ignored |
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