systemd-sysv-generator - Man Page

/usr/lib/systemd/system-generators/systemd-sysv-generator

Note: this component is deprecated and scheduled for removal. Please replace remaining SysV init scripts with native unit files.

systemd-sysv-generator is a generator that creates wrapper .service units for System V init^[1] scripts in /etc/init.d/* at boot and when configuration of the system manager is reloaded. This allows systemd(1) to support them similarly to native units.

LSB headers^[2] in SysV init scripts are interpreted, and the ordering specified in the header is turned into dependencies between the generated unit and other units. The LSB facilities "$remote_fs", "$network", "$named", "$portmap", "$time" are supported and will be turned into dependencies on specific native systemd targets. See systemd.special(7) for more details.

Note that compatibility is quite comprehensive but not 100%, for more details see Compatibility with SysV^[3].

systemd does not support SysV scripts as part of early boot, so all wrapper units are ordered after basic.target.

systemd-sysv-generator implements systemd.generator(7).

systemd(1), systemd.service(5), systemd.target(5)

1. System V init
   https://savannah.nongnu.org/projects/sysvinit
2. LSB headers
   http://refspecs.linuxbase.org/LSB_3.1.1/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
3. Compatibility with SysV
   https://systemd.io/INCOMPATIBILITIES

systemd.directives(7), systemd.generator(7), systemd.index(7), systemd.service(5).