@echo off
echo @echo off    > setdt.bat
echo set cdt=%%3 >> setdt.bat
echo set ctm=%%4 >> setdt.bat
dir setdt|find "BAT">router.bat
call router
del router.bat
del setdt.bat


Title:      "Environmental Date and Time"
Reference:  PC World June 1990
Author:     Cecil M. Goeldner
Files:      DATETIME.DOC, DATETIME.BAT, TESTDT.BAT

To add the date and time to DOS 3.3 (or a later version) batch-file
programs, use the technique demonstrated in DATETIME.BAT. The program
assigns the date to variables %cdt% (current date) and %ctm% (current
time). When DATETIME.BAT runs, it stores three lines in a new file
SETDT.BAT. First is an @echo off command. The second and third lines
have SET commands that assign arguments %3 and %4 to environment
variables, using the > and >> operators to create the new batch file
and append text to it.

Next, dir lists SETDT.BAT's directory entry, from which FIND
filters other text such as the pathname and bytes-free value. The
result--a single-line batch file reading something like "SETDT BAT
39 2-15-90 9:42a." Calling this batch file executes SETDT with
four arguments: BAT, 39, 2-15-90, and 9:42a, the first two of which
are ignored. The last two are saved to variables %cdt% and %ctm%.
After these steps, DATETIME.BAT erases ROUTER.BAT and SETDT.BAT,
leaving the date and time in the environment.

To use this technique, you must be running DOS 3.3 or a later version
that implements the CALL command. Copy DATETIME.BAT to a directory
listed in a PATH command and call it from another batch file. Run
TESTDT.BAT for an example of how DATETIME.BAT and its resulting
variables can be used. FIND.EXE must also be in the current path.

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