Commodore PC 20 - Shift

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1116 MS-DOS User's Reference
Shift
Shifting replaceable
IJarameters
Shift
Purpose:
Lets you change the position of replaceable parameters in batch
file processing.
Syntax:
shift
Comments:
You can use the shift command to change the positions of
(replaceable) command line parameters.
Usually
command files are limited to handling ten parameters, % 0
through %Q. But by using shift, you can access more than ten
parameters. This means that if there are more than ten parameters
given
on a command line, those that appear after the tenth (%9)
will be shifted one at a time into %9.
You can use
the shift command even if you have less than ten
parameters.
Warning There is no backward shift command. Once you have
executed shift, you cannot recover the first parameter (% 0) that
existed before
the shift.
Example:
The following file mycopy. bat shows how to use the shift com-
mand
with any number of parameters. It copies a list of files to
a specific directory.
rem mycopy.bat copies
rem any number of files
rem to a directory.
rem The command is
rem mycopy dir files
:one
if "%1" = ., ., goto two
set todir = %1
shift
copy %1 %todir%
goto one
:two
set todir=
echo All done
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