What is going to be the easiest way to find out how much disk space capacity has been utilized on a particular slice? For example, when I attempted this in a shell script, my syntax was as follows (to find the root partitions capacity):

SLICE1=`/bin/df -k|/bin/egrep "/^"|/bin/awk '{print $5}'`

Here I just used the output of a /bin/df -k and printed out the one value I was looking for. Should I simply pipe a df -k from the shell into my perl script, and trim up the output a bit, or is there a better way?