Get disk temperatures on 3ware RAID controller

3ware-disk-temperatures.sh

#!/bin/bash

### First we get the controller ID (e.g. c0)
CT=$(tw-cli info | sed -n 's/\(c[0-9]\).*/\1/p')

### Then we list all drives on that controller
DRV=$(tw-cli /$CT show drivestatus | sed -n 's/\(p[0-9]\).*/\1/p' | xargs)

### Last we loop over the disks we found and read out the temperature on each of them
echo "3ware temperatures: $(for d in $DRV; do 
  tw-cli /$CT/$d show temperature | sed -n 's/ Temperature = /:/;s/ deg //p'
done | xargs)" | logger

One could, of course, just shorten the whole thing into a single command, but setting the controller ID and the drives as variables makes it so much easier to use for something else than just temperature read-outs.