Here are some of the "switches" (command line options):
"C:\Program Files\Alwil Software\Avast4\SCHED.EXE" /?
usage:
sched /A:area [/RA:action [/RS:reply] ] [/archives] - schedules launching
area = * or folder1;folder2 ...
action = delete or move or chest or repair or ignore
reply = yes or no
sched /D - unschedules boot-time scanner launching
sched /F:"file" - schedules delayed file operations (listed in given file)
sched /U - unschedules boot-time scanner and any scheduled file operations
You could use these in a batch file.
Found this from here:
Actually, there IS a way to schedule the boot-time from a command-line, even in the Home Edition.
See the sched.exe program in the avast folder.
Type sched /? to find out how to use it.