@echo OFF
REM IsDay_2.bat - This is like IsDay_1.bat (Set ErrorLevel 1 if it is requested day
REM               of the week, and ErrorLeve 0 if not), but accomplishes this in
REM               only one quick call to CENVI.  Unlike IsDay_1.bat, this does
REM               no error checking and provides no help.

cenvi  day="%1"  day[3]=0    return( strstr(strupr(ctime(time())),strupr(day)) ? 1 : 0 )

if ErrorLevel 1 ECHO Yes, today is %1
if not ErrorLevel 1 ECHO No, today is not %1