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How to setup Systemd (tested on Debian:jessie)
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setting_up_systemd.md

How to setup Systemd

Create our first autostarted daemon service

sudo vim /etc/systemd/system/ping.service

Edit this file like this:

[Service]
ExecStart=/bin/ping google.com
Restart=always
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=ping-google
#WorkingDirectory=

[Install]
WantedBy=multi-user.target

Make daemon to be autostarted on boot of system

sudo systemctl enable ping.service

or we can do it manually by creating a symlink:

sudo ln -s /etc/systemd/system/ping.service /etc/systemd/system/multi-user.target.wants/ping.service

Restart systemd and test our daemon

Restart:

sudo systemctl daemon-reload

Check status of our daemon:

sudo systemctl status ping.service

See the output of our service:

sudo journalctl -u ping-google

Systemd as a cron replacement

Sources

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