initial setup

Makefile

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+dir: 
+	mkdir -p /usr/local/share/removeadhosts
+install: dir
+	cp src/* /usr/local/share/removeadhosts/
+	chown -R root:root /usr/local/share/removeadhosts
+	chmod +x /usr/local/share/removeadhosts/removeadhosts.sh
+	cp /usr/local/share/removeadhosts/removeadhosts.service /etc/systemd/system/
+	cp /usr/local/share/removeadhosts/removeadhosts.timer /etc/systemd/system/
+activate: install
+	systemctl enable removeadhosts.timer
+	systemctl start removeadhosts.timer
+deactivate: 
+	systemctl disable removeadhosts.timer
+	systemctl stop removeadhosts.timer
+remove: deactivate
+	rm -f /etc/systemd/system/removeadhosts*
+	rm -fr /usr/local/share/removeadhosts/
+
+reinstall: remove install

src/removeadhosts.service

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+[Unit]
+Description=update the hosts file to remove ads
+
+[Service]
+Type=oneshot
+ExecStart=/usr/local/share/removeadhosts/removeadhosts.sh
+
+[Install]
+WantedBy=multi-user.target

src/removeadhosts.sh

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+#!/bin/bash
+sed -n '1,/# start of removeadhosts/p' /etc/hosts > /tmp/removeadhosts
+cat /tmp/removeadhosts | tee /etc/hosts >/dev/null
+rm /tmp/removeadhosts
+echo "Appended old hosts"
+if grep -qinE '# start of removeadhosts' /etc/hosts
+then
+        echo "This has been run before"
+else
+        echo "First Run"
+        echo '# start of removeadhosts' >> /etc/hosts
+fi
+
+echo 'Downloading ad list'
+
+curl https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts 2>/dev/null | tee -a /etc/hosts >/dev/null

src/removeadhosts.timer

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+[Unit]
+Description=update host file to remove ads weekly
+
+[Timer]
+OnBootSec=15min
+OnUnitActiveSec=1w
+AccuracySec=1s
+
+[Install]
+WantedBy=timers.target