I was trying to use @reboot /my/script in cron to run a script on a 10.04.4 VM running in VMware Fusion top print ifconfig to a file on a shared directory, which is /mnt/hgfs/somedir.

It didn't work because hgfs is not mounted yet as a remote directory when the system starts. Is it possible to do something like @reboot +10s to run the cron job 10 sec after the system starts, when I can realistically expect to have that remote directory mounted on the system?