Create logtime.txt and adds the date, time and a message

Syntax
      LOGTIME text_string

Key
   text_string : The message to add to the log file. 

The date is stored in the US mm/dd/yy format (NT 4.0)

Sample batch file:

LOGTIME "begin import program"
import.exe
LOGTIME "end import program"

An alternative command is
ECHO. | DATE | FIND /i "current">>C:\Install_log.txt