Services
1. Init Systems init
ID: da8ae0b8-adcf-4639-9cfa-01b7b9fb3c44 CREATED: <2025-02-16 Sun 18:49>
SystemV -> systemd, OpenRC
1.1. systemd systemd
ID: 27dd8c6f-e018-4c91-9113-325be8ee483a CREATED: <2025-02-16 Sun 18:55>
– Chapter 10. Managing Services with systemd | Red Hat Product Documentation – systemd
1.1.1. Units
ID: 5fb03f4f-e7ba-47fe-a502-185348417aa4 CREATED: <2025-02-16 Sun 18:56>
systemd provides a dependency system between various entities called "units" of 11 different types.
In addition to the generic [Unit] and [Install] sections described here, each unit may have a type-specific section, e.g. [Service] for a service unit. See the respective man pages for more information:
- systemd.service(5)
- systemd.socket(5)
- systemd.device(5)
- systemd.mount(5)
- systemd.automount(5)
- systemd.swap(5)
- systemd.target(5)
- systemd.path(5)
- systemd.timer(5)
- systemd.slice(5)
- systemd.scope(5)
[Unit] Description=Emacs text editor Documentation=info:emacs man:emacs(1) https://gnu.org/software/emacs/ [Service] Type=notify ExecStart=/usr/local/bin/emacs --fg-daemon # Emacs will exit with status 15 after having received SIGTERM, which # is the default "KillSignal" value systemd uses to stop services. SuccessExitStatus=15 # The location of the SSH auth socket varies by distribution, and some # set it from PAM, so don't override by default. # Environment=SSH_AUTH_SOCK=%t/keyring/ssh Restart=on-failure [Install] WantedBy=default.target