ASET (ver 1.0) Abandoned Freeware ASET stands for Advanced SET command. It is an alternative to the internal DOS command SET which modifies shell variables. ASET contains over 100 built-in functions which cover the following categories: mathematical calculations, information about files and disks, retrieving information from CONFIG.SYS, string handling, user and file interaction, time/date handling, and others. ASET comes with documentation, a quick reference, the program itself, and seven example files which may executed with a batch file.