refactor installation script

install.sh

@@ -1,34 +1,24 @@
 #!/usr/bin/env sh
 
 systemctl -q is-active log2ram  && { echo "ERROR: log2ram service is still running. Please run \"sudo service log2ram stop\" to stop it."; exit 1; }
+[ "$(id -u)" -eq 0 ] || { echo "You need to be ROOT (sudo can be used)"; exit 1; }
 
+# log2ram
+mkdir -p /usr/local/bin/
+install -m 644 log2ram.service /etc/systemd/system/log2ram.service
+install -m 755 log2ram /usr/local/bin/log2ram
+install -m 644 log2ram.conf /etc/log2ram.conf
+install -m 644 uninstall.sh /usr/local/bin/uninstall-log2ram.sh
+systemctl enable log2ram
 
-if [ "$(id -u)" -eq 0 ]
-then
-  [ -d /usr/local/bin/ ] || mkdir /usr/local/bin/
-  cp log2ram.service /etc/systemd/system/log2ram.service
-  chmod 644 /etc/systemd/system/log2ram.service
-  cp log2ram /usr/local/bin/log2ram
-  chmod a+x /usr/local/bin/log2ram
-  cp log2ram.conf /etc/log2ram.conf
-  chmod 644 /etc/log2ram.conf
-  systemctl enable log2ram
-  cp log2ram.hourly /etc/cron.hourly/log2ram
-  chmod +x /etc/cron.hourly/log2ram
-  cp log2ram.logrotate /etc/logrotate.d/log2ram
-  chmod 644 /etc/logrotate.d/log2ram
-  cp uninstall.sh /usr/local/bin/uninstall-log2ram.sh
+# cron
+install -m 755 log2ram.hourly /etc/cron.hourly/log2ram
+install -m 644 log2ram.logrotate /etc/logrotate.d/log2ram
 
-  # Remove a previous log2ram version
-  if [ -d /var/log.hdd ]; then
-    rm -r /var/log.hdd
-  fi
+# Remove a previous log2ram version
+  rm -rf /var/log.hdd
 
-  if [ -d /var/hdd.log ]; then
-    rm -r /var/hdd.log
-  fi
+# Make sure we start clean
+rm -rf /var/hdd.log
 
-  echo "##### Reboot to activate log2ram #####"
-else
-  echo "You need to be ROOT (sudo can be used)"
-fi
+echo "##### Reboot to activate log2ram #####"