Export to the compressed file
/etc/mknod my_own_pipe p gzip -c -9 < my_own_pipe > mydump.gz & exp username/password …… file=my_own_pipe rm -f my_own_pipe
Import from the compressed file:
/etc/mknod my_own_pipe p gunzip -c mydump.gz > my_own_pipe & imp username/password ……. file=my_own_pipe rm -f my_own_pipe