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1988-09-03
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FreeWare from The Chocolate Factory
by Algernon
IFNULL.COM
Copyright (c) September 3, 1988
IFNULL.COM is another free batch file utility from The Chocolate
Factory, written by Algernon. It simply tests whether a batch
variable is null (egual to "") or not. The syntax is
IFNULL variable
Example: go.bat
echo off
ifnull %1
if errorlevel 2 goto end
if errorlevel 1 goto try
if errorlevel 0 goto null
:try
if %1 == bat goto batch
if %1 == BAT goto batch
:batch
c:
cd \sys\bat
dir
goto end
:null
blank
echo To use GO type `GO' name, where `name' is a directory name
echo supported by the go.bat file.
blank
:end
*****************************************************************
The example tests whether the batch variable %1 contains a null
string or not. If the variable is null then an errorlevel of 0
is returned by the program. If the variable is equal to a ? then
a help page is printed to the standard output device (usually the
screen), and an errorlevel of 2 is returned; otherwise, an
errorlevel of 1 is returned.
If you have an idea for a slick little utility that you could use
and don't want to program it yourself, send the idea to
The Chocolate Factory
1117 E. Roosevelt Rd #3
Wheaton, Ill. 60187
Who knows, Algernon may write it up for you.
Any programs resulting from ideas submitted to The Chocolate
Factory are the property of The Chocolate Factory and the
programmer who writes the program. The Chocolate Factory and its
programmer(s) reserve the right to charge fees for programming as
they see fit.