find * | cpio -o -H tar -F /data/backup_$(date %y %m %d).tar
find * | cpio -o -cB > /data/backup_$(date %y %m %d).tar
-o = Create, Run in Copy output mode.
-c = Identical to “-H newc”, use the new (SVR4) portable format. If you wish the old portable (ASCII), use “-H odc” instead.
-B = Set the I/O block size to 5120 bytes. Initially the block size is 512 bytes.
-F = File Archive, Archive Filename.
-H = Format File.