+# Sample script for the exec plugin (collectd-exec(5))
+#
+# This script uses smartctl(8) to read HDD temperatures. The drives are
+# attached to a 3ware RAID controller which hddtempd can't handle.
+# Unfortunately the smartmontools don't have a library so we can't write a
+# C-plugin, at least not easily.
+# Please note that only root can read the SMART attributes from harddrives,
+# because special ``capabilities'' are necessary. However, the exec plugin will
+# refuse to run scripts as root, which is why `sudo' is used here for
+# fine-grained root privileges for the user `smart'. This isn't as straigt
+# forward as one might hope, but we think that the gained security is worth it.