Add install script and Systemd units

.gitignore

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+variables.conf

conf-sync.sh

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+#!/bin/bash
+
+source "$(dirname "$0")/variables.conf"
+
+for dir in $sync_directory; do
+  git -C $dir rev-parse 2>/dev/null
+  if [ "$?" -ne 0 ]; then # ie. this is not a git repo
+    continue
+  fi
+  git -C $dir fetch
+  UPSTREAM=${1:-'@{u}'}
+  LOCAL=$(git -C $dir rev-parse @)
+  REMOTE=$(git -C $dir rev-parse "$UPSTREAM")
+  BASE=$(git -C $dir merge-base @ "$UPSTREAM")
+  if [ $LOCAL = $REMOTE ]; then
+      echo "$dir: up-to-date"
+  elif [ $LOCAL = $BASE ]; then
+      echo "pulling $dir"
+      git -C pull
+      if []; then
+        echo "Running $dir\'s install script..."
+        $dir/install.sh
+      fi
+  elif [ $REMOTE = $BASE ]; then
+      echo "WARNING: $dir is ahead of remote!"
+  else
+      echo "WARNING: $dir and remote have diverged!"
+  fi
+done
+
+exit 0

install.sh

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+#!/bin/bash
+
+source "$(dirname "$0")/variables.conf"
+
+# TODO handle non-Systemd systems
+
+echo "Copying Systemd units to system directory..."
+sudo cp systemd-templates/conf-sync.service /etc/systemd/system/
+sudo sed -i -e "s/PH_USER/$(whoami)/g" /etc/systemd/system/conf-sync.service
+sudo sed -i -e "s:PH_DIRECTORY:$(pwd):g" /etc/systemd/system/conf-sync.service
+if $client_type == "server"; then # TODO not finished
+  sudo cp systemd-templates/dns-update.timer /etc/systemd/system/conf-sync.timer
+else
+  sudo cp systemd-templates/dns-update.timer /etc/systemd/system/conf-sync.timer
+fi
+
+echo "Reloading Systemd..."
+sudo systemctl daemon-reload
+echo "Enabling timer (not starting it, either do it manually or reboot)..."
+sudo systemctl enable conf-sync.timer
+
+echo "Finished install. Exiting..."
+exit 0

systemd-templates/conf-sync-desktop.timer

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+[Unit]
+Description=Run conf-sync after boot (for desktops)
+
+[Timer]
+Unit=conf-sync.service
+OnBootSec=5min
+
+[Install]
+WantedBy=timers.target

systemd-templates/conf-sync-server.timer

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+[Unit]
+Description=Run conf-sync daily (for servers)
+
+[Timer]
+Unit=conf-sync.service
+OnCalendar=*-*-* 06:00:00
+Persistent=true
+
+[Install]
+WantedBy=timers.target

systemd-templates/conf-sync.service

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+[Unit]
+Description=Configuration files synchronisation
+After=network.target
+
+[Service]
+Type=oneshot
+User=PH_USER
+ExecStart=PH_DIRECTORY/conf-sync.sh

variables.conf.template

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+#!/bin/bash
+
+# Copy this file as variables.conf, with the correct values
+
+sync_directory=/home/$(whoami)/.sync
+client_type="desktop" # change to server if needed