Service as Root

/usr/local/bin/test1.sh

#/!/bin/bash while : do echo “Running …” logger $(date) sleep 10 done

chmod +x /usr/local/bin/test1.sh

/etc/systemd/system/test1.service

[Unit] Description= Simple test service

[Service] Type=simple ExecStart=/usr/local/bin/test1.sh

[Install] WantedBy=multi-user.target

sudo chmod 664 tracker.service sudo systemctl daemon-reload

sudo systemct enable tracker sudo systemct start tracker sudo systemct status tracker

sudo cat /var/log/syslog

Service as Non-root

• Run as a non-root user
• Restart automatically when not running
• Attempt restart after 1 second ( default is 100ms )
• Make sure it starts after network and nss-lookup are up
• Attempt to restart forever ( StartLimitIntervalSec=0 ) ( default stop after 5 fails in 10 secs )

[Unit] Description= Simple test service After=network.target nss-lookup.target StartLimitIntervalSec=0

[Service] Type=simple Restart=always RestartSec=1 User=prduser ExecStart=/usr/local/bin/test1.sh

[Install] WantedBy=multi-user.target

More Info

Type = simple # for a program that starts and just keeps running, sucess right after fork Type = exec # almost the same, sucess after both fork and binary up and running Type = forking # for a program that daemonizes itself ( launcher returns after forking ) Type = oneshot # for one shot serrvices that don’t keep running