can someone tell me in details what this command does:

pax -rpe -f /dev/rmt0 -s:^/home:/temp/test:g

The definition given in the source i got this from says that command is used to restore the files from /home to /tmp/test.

now, i know there's goto be a deeper explanation than that. can someone explain this to me?


second part

can someone please tell me what the best backup strategy is for the systems: AIX IRIX and HP-UX. i mean this in terms of faster disaster recovery