Running a boot time scan from Avast command line is only possible in Avast internet security and in Avast pro antivirus, the scan done using the command line is done by the help of various switches and parameters, in order to see a description of all the parameters search the ashcmd file and double click on it in order to get it opened, then to start with the scan go to the command prompt and get the directory changed then enter the program name followed by the area that you need to scan along with appropriate parameters and for more help visit here Avast Phone Number & http://www.avast-phone-number.com/ & http://www.avast-phone-number.com/blog.html