some systemd unit and service files for (debian)

dhcpcd.service

# IMPORTANT: only (!) compatible with dhcpcd5, not dhcpcd3
[Unit]
Description=dhcpcd on %I
Wants=network.target
Before=network.target

[Service]
Type=forking
PIDFile=/run/dhcpcd-%I.pid
ExecStart=/sbin/dhcpcd -A -q -w %I
ExecStop=/sbin/dhcpcd -k %I

[Install]
Alias=multi-user.target.wants/dhcpcd@eth0.service

dhcpcd@.service

[Unit]
Description=dhcpcd on %I
Wants=network.target
Before=network.target

[Service]
Type=forking
PIDFile=/run/dhcpcd-%I.pid
ExecStart=/sbin/dhcpcd -A -q -w %I
ExecStop=/sbin/dhcpcd -k %I

[Install]
Alias=multi-user.target.wants/dhcpcd@eth0.service

ifplugd.service

[Unit]
Description=Daemon which acts upon network cable insertion/removal

[Service]
Type=forking
PIDFile=/run/ifplugd.%i.pid
ExecStart=/usr/sbin/ifplugd %i
SuccessExitStatus=0 1 2

[Install]
WantedBy=multi-user.target

ifplugd@.service

[Unit]
Description=Daemon which acts upon network cable insertion/removal

[Service]
Type=forking
PIDFile=/run/ifplugd.%i.pid
ExecStart=/usr/sbin/ifplugd %i
SuccessExitStatus=0 1 2

[Install]
WantedBy=multi-user.target

monit.service

# This file is systemd template for monit service. To
# register # monit with systemd, place the monit.servicefile
# to the /lib/systemd/system/ directory and then start it
# using systemctl (see bellow).
#
# Enable monit to start on boot: 
#         systemctl enable monit.service
#
# Start monit immediately: 
#         systemctl start monit.service
#
# Stop monit:
#         systemctl stop monit.service
#
# Status:
#         systemctl status monit.service

[Unit]
Description=Pro-active monitoring utility for unix systems
After=network.target

[Service]
Type=simple
ExecStart=/usr/bin/monit -I
ExecStop=/usr/bin/monit quit
ExecReload=/usr/bin/monit reload

[Install]
WantedBy=multi-user.target

ntp.service

[Unit]
Description=Network Time Service
After=network.target nss-lookup.target

[Service]
Type=forking
PrivateTmp=true
ExecStart=/usr/sbin/ntpd -g -u ntp:ntp
ControlGroup=cpu:/

[Install]
WantedBy=multi-user.target

ssh.service

[Unit]
Description=SSH Per-Connection Server
Requires=sshdgenkeys.service
After=syslog.target
After=sshdgenkeys.service

[Service]
ExecStartPre=/bin/mkdir -m700 -p /var/run/sshd
ExecStart=-/usr/sbin/sshd -i
ExecReload=/bin/kill -HUP $MAINPID
StandardInput=socket

ssh.socket

[Unit]
Conflicts=ssh.service

[Socket]
ListenStream=22
Accept=yes

[Install]
WantedBy=sockets.target

ssh@.service

[Unit]
Description=SSH Per-Connection Server
Requires=sshdgenkeys.service
After=syslog.target
After=sshdgenkeys.service

[Service]
ExecStartPre=/bin/mkdir -m700 -p /var/run/sshd
ExecStart=-/usr/sbin/sshd -i
ExecReload=/bin/kill -HUP $MAINPID
StandardInput=socket

sshdgenkeys.service

[Unit]
Description=SSH Key Generation
ConditionPathExists=|!/etc/ssh/ssh_host_key
ConditionPathExists=|!/etc/ssh/ssh_host_key.pub
ConditionPathExists=|!/etc/ssh/ssh_host_ecdsa_key
ConditionPathExists=|!/etc/ssh/ssh_host_ecdsa_key.pub
ConditionPathExists=|!/etc/ssh/ssh_host_dsa_key
ConditionPathExists=|!/etc/ssh/ssh_host_dsa_key.pub
ConditionPathExists=|!/etc/ssh/ssh_host_rsa_key
ConditionPathExists=|!/etc/ssh/ssh_host_rsa_key.pub

[Service]
ExecStart=/usr/bin/ssh-keygen -A
Type=oneshot
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target