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Path: utzoo!watmath!clyde!rutgers!mit-eddie!genrad!decvax!tektronix!tekgen!tekigm!tekigm2!jimb
From: jimb@tekigm2.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: patches to DOS v 3.1
Message-ID: <1438@tekigm2.TEK.COM>
Date: Wed, 4-Feb-87 13:30:03 EST
Article-I.D.: tekigm2.1438
Posted: Wed Feb  4 13:30:03 1987
Date-Received: Sat, 7-Feb-87 09:49:43 EST
References: <108@nikhefk.UUCP>
Reply-To: jimb@tekigm2.UUCP (Jim Boland)
Organization: Tektronix, Vancouver WA
Lines: 25

In article <108@nikhefk.UUCP> keeshu@nikhefk.UUCP (Kees Huyser) writes:

 >   COMMAND.COM -- SOME UNDOCUMENTED FEATURES

 >        /E:NN        Set size of Environment area to NN paragraphs. Range
 >                     is 10 to 62  Numbers outside that range are ignored.
 >                     The default is /E:10.
I believe the number is really the number of bytes to set for the 
environment. I use the number 512 and it works fine.  I believe the correct
range is 160 - 32768.  The default is 127 (that which you get without 
setting the size).  

 >     This feature is most useful when used in conjunction with the
 >     SHELL= OPTION in CONFIG.SYS.  In particular, my usage is as follows:

 >       SHELL=C:\DOS\COMMAND.COM C:\DOS /P /E:20

>       The '/P' parameter indicates that the substitution should be permanent.
No.  the '/P' tells command.com to execute your autoexec.bat file once
command.com gets loaded.  If you put the above shell  statement in your
config.sys file without the /P, your autoexec.bat file will not get executed.
The reason is that you may not want to use command.com.  Perhaps you wrote
your own processor that you want to use in lieu of command.com.  You would
use the shell command to load it.  You may not want to execute autoexec.bat.
The /P gives you the option or ignoring it.