# 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

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## Options:

      options  These are passed to the command shell.

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## 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.

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## 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

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## See also:

      autoexec.bat
      command.com
      config.sys
      fdconfig.sys
      fdxms
      fdxms286
      himem
      himemx
      jemmex
      shell

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## File:

      Please read this command's lsm file also.
      You will find the updated version (internet) here and
      the version described in this manual page here.
      The lsm file contains information about the name of the programmer,
      the download site, and some other command related information.

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      Copyright © 1998 Jim Hall, updated 2008 by W. Spiegl.

      This file is derived from the FreeDOS Spec Command HOWTO.
      See the file H2Cpying for copying conditions.