Systemd init script support

[benkaiser]

Related to issue #55
With the recent news of both Debian and Ubuntu moving to systemd, it makes sense that pm2 startup should add support for systemd startup scripts, perhaps via pm2 startup systemd. This would also bring support for Arch Linux and Fedora that already use systemd.

[rlidwka]

imho, it should be pm2 startup systemd and pm2 startup upstart instead of pm2 startup ubuntu or whatever

I mean, init system is significant here, but distro name isn't.

[rlidwka]

or just pm2 startup and auto-detect init system if possible

[benkaiser]

@rlidwka yeh you are right, it is the init system. However I don't know if different distros use different locations for init scripts? I guess the init system can fetch those locations? But yes using pm2 startup systemd and pm2 startup upstart makes more sense. Or the auto-detection.

[soyuka]

#115 related
#312 auto-detect platform

[alexandernst]

The whole point of using systemd is to ... well... actually use it. So that should be, as all other software packages that use systemd, systemd startup/stop/restart pm2.

[Unitech]

#333