> Is there a flag for the df command to get the total disk space used on
> all filesystems as one number? I have a server with a lot of mounted
> shares. I'm looking for a simple way to measure rate of data growth
> across all shares as one total value.
Not directly, but you can add up all the entries mounted from /dev with
a simple awk statement:
df -kl | awk '/^\/dev\// { avail += $3/1024 } END { printf("%d Mb used\n",avail)} '
--
rgds
Stephen