Command: shellhigh
SHELLHIGH tells FreeDOS what command shell to run.
SHELLHIGH is a CONFIG.SYS / FDCONFIG.SYS command.
Syntax:
shellhigh=[drive][path]filename [options]
drive The drive letter, e.g. C:
path The directory, e.g. \example\
filename The command shell to run. For example,
C:\example\COMMAND.COM
Options:
options These are passed to the command shell.
Comments:
SHELLHIGH indicates the shell to use; often used to alter COMMAND.COM's
behavior. Note: it is command.com that processes AUTOEXEC.BAT; by using
the SHELL option, you can get command.com to process a differently named
file (such as FDAUTO.BAT for coexisting with another DOS using different
configuration options) or run a completely different command interpreter
such as 4DOS or a (unix) sh variant.
SHELLHIGH is like SHELL, except it attempts to load the command SHELL
(COMMAND.COM) into high memory first (failing that it should load it
in conventional memory).
Note: The order you load devices may have a large impact on amount
of free memory available. In general try to load large (in memory
usage) programs into high memory first.
Important: You should have a high memory manager such as (HIMEM),
HIMEMX or JEMMEX installed (prior device=himem.exe or device=himemx.exe
in CONFIG.SYS / FDCONFIG.SYS) before using this option.
SHELLHIGH is a command internal to kernel.sys and needs no other file
in order to work.
Examples:
IN CONFIG.SYS / FDCONFIG.SYS:
shellhigh=C:\4DOS.COM /E:256 /P
shellhigh=C:\FDOS\bin\command.com C:\FDOS\bin /E:1024 /P=C:\fdauto.bat
See also:
autoexec.bat
command.com
config.sys
fdconfig.sys
(fdxms)
(fdxms286)
(himem)
himemx
jemmex
shell
Copyright © 1998 Jim Hall, updated 2011 by W. Spiegl.
This file is derived from the FreeDOS Spec Command HOWTO.
See the file H2Cpying for copying conditions.