Hi guys, I have to make an output of several databases we've got running on our system with the command bdf. This has to be done every 3 months. I want to put it in an scriptfile and trigger it in crontab. In the output it must display the differences in diskspace between these three monts. Any idea how to do this? I'm an newbie on hp-ux

To schedule script every 3 months in crontab:

0 0 3,6,9,12 * * script

bdf [filesystem] | awk 'NR>1&&NF==5' > out_$(date +%b)

Thx!

Is there a way to calculate the differences between this? I mean with a script.

Berkeley df can break the output in two lines,
even if the output is not connected to a terminal (e.g. to a pipe).
So it's safer to have

#!/bin/ksh -p
bdf | awk 'NR>1 && NF>=5 { print $(NF-1) }' > out_$(date +%b)

#!/bin/ksh -p
ls -rt |
while read file
do
 read val < $file
 val=${val%%%}
 if [ -z "$preval" ]
 then
  preval=$val
 else
  delta=$(($val - $preval))
  printf "%s: %d (%+d)\n" $file $val $delta
 fi
done