Using the unix "at" command with GRASS

[BAKERWL at UWYO.EDU]

At times it would be nice to be able to make a file containing a set of
GRASS commands, then submit it to be executed at a particular time using
the unix "at" command or "crontab" Although I can make a file of commands
turn it into an executable (chmod 0777 filename) and then run the file
of commands by typing filename, this doesn't work if filename is submitted
to the "at" command, as follows:

	at 10:30 filename

When the job runs at 10:30, I get a mail message saying my "at" job
produced the following message "TERM: Undefined variable."  GRASS is
running when I submit the "at" job, but the operating system doesn't
seem to recognize that the command file is a GRASS job.  Any ideas how
to use "at" or "crontab" to line up a set of grass jobs to be run at
certain times?

	Bill Baker
	bakerwl at uwyo.edu