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Output backends for utrans
Backends enable utrans to produce various output formats.
The following types are available:-
- service (openrc, lsb)
- timer (cron)
- inetd (xinetd, inetd)
Valid backends:-
- must be bash scripts. A shebang is not required and the files should
not be executable as backends are sourced by the main
program. Therefore they inherit the restrictions of the main script
(currently errexit, pipefail, nounset, noglob).
- must provide a function export_<TYPE> for each type they wish to
handle. The function is called with 2 arguments: the full path to the
systemd unit and the base output directory. The backend is responsible
for creating any subdirectories it requires and writing files within them.
- should use the global associative arrays (unit, service, socket,
timer, install) whose keys allow access to the parsed systemd unit.
Systemd Before, After, Requires and Wants dependencies are translated
to insserv/LSB-style equivalents accessible via the
depends[{Before,Requires,Wants}] array.
- are recommended to embed the output of gen_origin() at the top of any
generated files. This will produce a header with the origin file
sha256.
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