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Full Discussion: How to detect which process is run by what?
Top Forums UNIX for Beginners Questions & Answers How to detect which process is run by what? Post 303038381 by hicksd8 on Sunday 1st of September 2019 09:42:21 AM
Old 09-01-2019
I'm not sure what you're asking here but I think it's about how to stop crontab running a job.

If you use the crontab command to create or cancel or modify a schedule then the crontab daemon should get signalled immediately and modify its behaviour. If you edit the crontab files directly then it could take up to 24 hours to take effect because the crontab daemon doesn't know about the change. To get an immediate effect in this case you would need to issue a command to restart the cron daemon from a root privileged account.

On Ubuntu the cron tables themselves are located at /var/spool/cron/crontabs. There is one file for each user with cron jobs scheduled and you can cat these to see the contents (but, by the book, you shouldn't edit them).

Does that help or have I misunderstood your question?
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LEARN ABOUT MOJAVE

systemd-rc-local-generator

SYSTEMD-RC-LOCAL-GENERATOR(8)                               systemd-rc-local-generator                               SYSTEMD-RC-LOCAL-GENERATOR(8)

NAME

       systemd-rc-local-generator - Compatibility generator for starting /etc/rc.local and /usr/sbin/halt.local during boot and shutdown

SYNOPSIS

       /lib/systemd/system-generators/systemd-rc-local-generator

DESCRIPTION

       systemd-rc-local-generator is a generator that checks whether /etc/rc.local exists and is executable, and if it is pulls the
       rc-local.service unit into the boot process. This unit is responsible for running this script during late boot. Note that the script will
       be run with slightly different semantics than the original System V version, which was run "last" in the boot process, which is a concept
       that does not translate to systemd. The script is run after network.target, but in parallel with most other regular system services.

       systemd-rc-local-generator also checks whether /usr/sbin/halt.local exists and is executable, and if it is pulls the halt-local.service
       unit into the shutdown process. This unit is responsible for running this script during later shutdown.

       Support for both /etc/rc.local and /usr/sbin/halt.local is provided for compatibility with specific System V systems only. However, it is
       strongly recommended to avoid making use of these scripts today, and instead provide proper unit files with appropriate dependencies for
       any scripts to run during the boot or shutdown processes.

       systemd-rc-local-generator implements systemd.generator(7).

SEE ALSO

       systemd(1), systemctl(1)

systemd 237                                                                                                          SYSTEMD-RC-LOCAL-GENERATOR(8)
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