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Command
Type
Purpose
The SHELL command allows the user to specify a different boot program other
than the default COMMAND.COM. ROM-DOS will boot this new program, with
arguments, instead of the one speciÞed internally.
Syntax
SHELL = boot_program arguments
Remarks
The SHELL command is most often used to start the initial copy of COMMAND
with special parameters. One parameter is used for providing a larger
environment than the default 128 bytes.
The boot_program can be any executable program. The full path, including drive
letter, should be speciÞed if the program is not in the root directory of the default
drive.
Arguments are optional and program speciÞc. They will vary depending on the
boot_program being executed by the SHELL command.
Examples
This SHELL command boots the standard Command Processor but sets the
environment space to 512 bytes (up from the default 128). The /P parameter tells
COMMAND that it is permanent (cannot terminate).
SHELL=C:\COMMAND.COM /E:512 /P
This example of the SHELL command boots a program called MYPROG.EXE,
located in the directory TEMP, instead of the standard Command Processor.
SHELL = C:\TEMP\MYPROG.EXE
SHELL
CONFIG.SYS
Chapter 5: ROM DOS Commands
5-83
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