Dec 062017
Disable ECHO permanently for different versions of DOS.
File NOECHO.ZIP from The Programmer’s Corner in
Category Batch Files
Disable ECHO permanently for different versions of DOS.
File Name File Size Zip Size Zip Type
ATT21.BAT 175 149 deflated
COMPAQ21.BAT 178 151 deflated
COMPAQ31.BAT 68 62 deflated
IBM20.BAT 175 149 deflated
IBM21.BAT 175 149 deflated
IBM31.BAT 65 60 deflated
LE21.BAT 174 148 deflated
LE31.BAT 64 59 deflated
NOECHO.DOC 2113 921 deflated
SPRY31.BAT 66 61 deflated

Download File NOECHO.ZIP Here

Contents of the NOECHO.DOC file


For all those "Front-End Writers" that can't stand to have to put
ECHO OFF followed by CLS at the top of a batch file and then see the ECHO OFF
come up on the screen, these little patches to DOS COMMAND.COM
are just what you need. They make ECHO OFF the default condition for all batch

Please note that the patch files will ONLY work for their respective
versions of DOS, as the COMMAND.COM for the various systems are somewhat

1/28/85 Use IBM20.BAT for PC-DOS 2.0

1/28/85 Use IBM21.BAT for PC-DOS 2.1

8/18/86 Use IBM31.BAT for PC-DOS 3.1

8/18/86 Use SPRY31.BAT for SPERRY MS-DOS 3.1

8/18/86 Use COMPAQ21.BAT for COMPAQ MS-DOS 2.1

8/18/86 Use COMPAQ31.BAT for COMPAQ MS-DOS 3.1

8/18/86 Use ATT21.BAT for AT&T MS-DOS 2.1

8/18/86 Use ATT31.BAT for AT&T MS-DOS 3.1

8/18/86 Use LE21.BAT for LEADING EDGE MS-DOS 2.1

8/18/86 Use LE31.BAT for LEADING EDGE MS-DOS 3.1

To run the patch files, just make sure you have a copy of DEBUG.COM and
the respective version of COMMAND.COM on the same disk (and in the same
directory). Then type the appropriate batch file shown above. As DEBUG
uses the contents of the batch file which calls it for data to do the patch
you will see a couple of error indications as DEBUG tries to make sense out
of the first two lines of the file. These won't hurt anything.

When you are back at the DOS prompt, use the new COMMAND.COM to re-boot
your system with, and voila! Note that if you intend using the patched version
you have made, you should go through ALL your disks that have that version of
COMMAND.COM on them and replace it with the new patched copy if you want to
avoid the annoying "Illegal COMMAND.COM ..." messages that appear when DOS
tries to reload old unpatched copies of COMMAND.COM.

Dave Gwillim Mike Harris
Los Angeles, CA Washington, DC
28 January 1985 18 August 1986

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