sysv-rc-conf in Debian
----------------------

sysv-rc-conf directly manipulates the system's runlevel symlinks. The preferred
Debian mechanism for doing this is through update-rc.d(8), which in turn may
invoke a lower-level mechanism, insserv(8). Unlike rcconf(8), which is a front
end for update-rc.d, sysv-rc-conf bypasses all init system logic and policy
frameworks such as policy-rc.d.

Note that if sysvinit is not the current init system, there is no guarantee
that the changed runlevel symlinks will be effective. In particular, they will
be ignored by systemd; systemd users should use systemctl to control the
enablement of system services. For other init systems the behaviour will depend
on what fallback mechanisms exist to benefit from installed initscripts.

 -- Andrew Bower <andrew@bower.uk>  Mon, 12 May 2025 21:57:33 +0100