Linux - Boot (Init service system)

1 - About

The Init system is the first process (as PID 1) started by a operating system at system startup that start all other service (ie services)

3 - List

The following are possible init system:

4 - Management

4.1 - How to know wich init system is running

  • bash

ps -f --pid 1

UID         PID   PPID  C STIME TTY          TIME CMD
root          1      0  0 11:38 ?        00:00:07 /usr/lib/systemd/systemd --switched-root --system --deserialize 21

where: systemd is SystemD - Services

  • Ansible shows you this information in the ansible_service_mgr variable

when: ansible_service_mgr == "systemd"

Possible values are:

Data Science
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Data Science
Linear Algebra Mathematics

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