SPEC for a general useless ticking service with systemd unit and overridable rpm macros

tick5.spec

# Variables that can be override on build time.
%{!?name: %define name tick5}
%{!?version: %define version 0.0}
%{!?release: %define release 1}
%{!?systemdinstalldir: %define systemdinstalldir /etc/systemd/system}
%{!?message: %define message come on, James}

# Some metadata required by an RPM package
Name: %name
Summary: Print a message every 5s
Version: %version
Release: %release
License: MIT

%description
tick5 is a simple useless script that echos a message every 5 seconds.


%install

# copy the executable to buildroot.
%{__mkdir} -p %{buildroot}%{_prefix}/bin
%{__cp} -pdf tick5 %{buildroot}%{_prefix}/bin/%{name}
%{__chmod} 755 %{buildroot}%{_prefix}/bin/%{name}

# generate the systemd unit file to buildroot.
%{__mkdir} -p %{buildroot}%{systemdinstalldir}
%{__cat} <<EOF> %{buildroot}%{systemdinstalldir}/%{name}.service
[Unit]

[Install]
WantedBy=multi-user.target

[Service]
ExecStart=%{_prefix}/bin/%{name} %{message}
Restart=always
RestartSec=5
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=%n
EOF


%files
%{_prefix}/bin/%{name}
%{systemdinstalldir}/%{name}.service