CONFIG.SYS - SET Statements

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Environment variables are stored by OS/2 in memory and can be called by any program. They are used by many programs to store information (for example, the install path) or some configuration information. If you want to see a list of all installed environment variables and their values, type "Set" in an OS/2 window. If the list is too long, you can redirect the screen output to a file, simply type this:

SET >output.txt

General Tips

Note that SET commands in CONFIG.SYS behave differently than when entered on the command line.

So, when you issue the following comands in a OS/2 session:

SET TEMP=C:\TMP
SET TMP=%TEMP%

you get:

TEMP=C:\TMP
TMP=C:\TMP

But, if you add the same lines to CONFIG.SYS:

SET TEMP=C:\TMP 
SET TMP=%TEMP%

you get:

TEMP=C:\TMP
TMP=%TEMP%

but not TMP=C:\TMP. The enviroment variable TMP now has the value composed by the letters "%", "T", "E", "M", "P", "%". For that reason, in CONFIG.SYS, you must write the values explicitly as follows:

SET TEMP=C:\TMP
SET TMP=C:\TMP

This is because variables are not expanded during CONFIG.SYS processing, but they are when run from a shell (command line).

Base Operating System

PM

Help Manager

Workplace Shell

SOM

OS/2 SOM Set Statements.

Programming Environments

Java Run-time

Networking

LAPS

Global Security Runtime

MM...

PM_

PM_ASYNC_FOCUS_CHANGE

PROGRAMS

Define the path for program installation in eComStation 1.1.

SET PROGRAMS=<path>

Example

SET PROGRAMS=C:\PROGRAMS
  • PROMPT - OS/2 session prompt appearance

PSIDATADIR

Set Statement for the PSI jabber client program. This statement allow to change the default profile path to other one.

SET PSIDATADIR=<path>

Value can be any full path.

PNHOSTNAME

Pronews use the value of this variable as the hostname in the message-ID in outgoing news articles.

SET PNHOSTNAME=myprovider.net

Value can be any full path . Relative paths are not allowed.

QT_PM_NO_DIVE

This statement is used by the QT library. It has been reported to help with some screen redraw problems.

SET QT_PM_NO_DIVE=1 
Parameter
Value can be 1 or 0. It defines 1=On, 0=Off.

Platform Support:

OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
? ? Yes Yes

QUEUE_SIZE_THRESHOLD

Controls the size of the OS/2-Message-Queue.

SET QUEUE_SIZE_THRESHOLD=<value>
Parameter

Value defines the number of messages which can be together at one time in the message-queue. Standard: 3000 messages, Warp 3 befor Fixpack 17: 100 messages.

Value can be any full path. Relative paths are not allowed.

RESTARTOBJECTS

This variable controls the restart of programs at start up.

SET RESTARTOBJECTS=parameter
Default settings
  • SET RESTARTOBJECTS=YES
Parameters
  • Yes - This enables restarting of all running programs. All running processes and all open folders at shutdown will be restarted at start up.
  • No - The system starts no programs and opens no folders at start up.
  • StartUpFoldersOnly - Only programs in the startup folder will be started.
  • ReBootOnly -Restarts programs only after a normal reboot or power on.

Value can be any full path. Relative paths are not allowed.

RUNWORKPLACE

This variable defines the user interface program (the WPS).

SET RUNWORKPLACE=C:\OS2\PMSHELL.EXE

Parameters:

Value can be any shell with a full path. Value can be any full path. Relative paths are not allowed.

ATSHELL:

This variable change the user interface program to load at boot, and replace it with Atshell program.

SET RUNWORKPLACE=x:\path\ATSHELL.EXE

where x:\path is wherever ATSHELL.EXE is placed.

Parameters:

  • /Q

This causes the desktop shell to be launched immediately when ATSHELL first starts up, without displaying the ATSHELL dialog. (The ATSHELL dialog will appear, however, when/if you close the desktop shell program.)

  • /S

This enables a simple 'secure' mode. When ATSHELL is started with this parameter, the command prompt and configuration options are disabled and inaccessible. USE THIS OPTION WITH CAUTION -- if you don't have an alternative method of booting (such as boot diskettes or a maintenance partition), you won't have any way of changing the configuration (or even removing ATSHELL from CONFIG.SYS), unless the desktop (or startup) program itself gives you access to a command prompt. Alternatively, you can use this in conjunction with the multi-user local logon feature of Security/2, by setting 'atshell /s' as the local shell for non-privileged users, and keeping the WPS (or something else) for the system administrator.

SANE_CONFIG_DIR

Describes the configuration directory path for the SANE program. Points to the installation directory of the OS/2 SANE driver (*.conf). Regard the use of slashes (/).

SET SANE_CONFIG_DIR=<path>
ex: SET SANE_CONFIG_DIR=C:\PROGRAMS\TAME\conf

WarpCenter

SCCANBENUKED

Allows the Warpcenter to have a delete option on its context menu.

SET SCCANBENUKED=value

or

SET CANBENUKED=value

Parameters:

Value can be ON or 1 or OFF or 0 . If this parameter is not set it defaults to OFF

Value can be any full path . Relative paths are not allowed.

Platform Support:

OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
No No Yes Yes

SCFINDUTILITY

With this entry you can use a different search program in the Warpcenter. By default, the Warpcenter starts a very slow program when you press this button Warpcenter Find Button In the \OS2\APPS directory is the fast find utility PMSeek.exe which you can use instead of the default program.

SET SCFINDUTILITY=<value>

or

SET FINDUTILITY=<value>

Parameters:

Value can be any program with a full path or object-id. If this parameter is not set the default find utility is used.

Example:

SET SCFINDUTILITY=Programe_Name.exe 

Platform Support:

OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
No No Yes Yes

SCKILLCONFIRMDISABLED

Avoid the "Are you sure ..." dialog if using the Warpcenter kill feature. :Note. You must also have the SET SCKILLFEATUREENABLED variable installed.

  SET SCKILLCONFIRMDISABLED=value

or

  SET KILLCONFIRMDISABLED=value

Parameters:

Value can be ON or 1 or OFF or 0 . If this parameter is not set it defaults to OFF

Example:

  SET SCKILLCONFIRMDISABLED=ON

Platform Support:

OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
No No Yes Yes

SCKILLFEATUREENABLED

This entry enables you to use the Warpcenter window list Warpcenter Window List as an application killer. To kill an application you must hold down the key and click the left mouse button on the window list icon on the Warpcenter. A drop down menu appears and you can then select the process you want to kill. If you have selected a process, the system will ask you if you really want to kill the process.

SET SCKILLFEATUREENABLED=value

or

SET KILLFEATUREENABLED=value

Parameters:

Value can be ON , 1 , OFF or 0. If this parameter is not set it defaults to OFF

Value can be any full path. Relative paths are not allowed.

Example

SET SCKILLFEATUREENABLED=ON 

or

SET KILLFEATUREENABLED=ON 

Platform Support:

OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
No No Yes Yes

SCUSEPRETTYCLOCK

With this entry you can change the look of the Warpcenter clock to this: Warpcenter Clock. It replaces the normal Warpcenter clock with one that has a digital display.

SET SCUSEPRETTYCLOCK=<value>

or

SET USEPRETTYCLOCK=<value>
Example
SET SCUSEPRETTYCLOCK=ON
Parameters

Value can be ON or 1 or OFF or 0. If this parameter is not set the default clock is used.

Value can be any full path. Relative paths are not allowed.

Platform Support:

OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
No No Yes Yes

SDD

These are the Set Statements used by the Scitech Software Display Doctor for OS/2.

SDDFONTDPI

This variable is used by the Scitech Software Display Doctor for OS/2. The Display Doctor is a universal driver for almost every graphiccard and currently in BETA test. Here can you change the logical Dots Per Inch (DPI) for matching the logical font point sizes to real pixel sizes.

SET SDDFONTDPI=<value>
Parameters
Value can be 96 or 120. 96 DPI is usually used for small fonts and 120 DPI for large fonts.

If this variable is not set the default of 96 is used.

Value can be any full path. Relative paths are not allowed.

SDDFONTSIZE

This variable is used by the Scitech Software Display Doctor for OS/2. The Display Doctor is a universal driver for almost every graphiccard and currently in BETA test. Here can you choose small, medium or large fonts.

SET SDDFONTSIZE=<value>
Parameters
Value can be small or medium or large.

If this variable is not set the default small fonts are used.

Value can be any full path. Relative paths are not allowed.

SDDHRES

This variable is used by the Scitech Software Display Doctor for OS/2. The Display Doctor is a universal driver for almost every graphiccard and currently in BETA test. Here can you set up the horizontally Pels Per Meter (PPM), this is used to determine scaling between pixels and millimeter on the screen.

SET SDDHRES=<value>

Parameters:

Value can be pels per meter. If this variable is not set the SDD will compute the best value of this setting for you. Usually it is not needed to set this variable.

Value can be any full path. Relative paths are not allowed.

SDDICONS

This variable is used by the Scitech Software Display Doctor for OS/2. The Display Doctor is a universal driver for almost every graphiccard. With this environment variable can you change the Icon size on the desktop.

SET SDDICONS=<value>

Parameters:

Value can be small or large. Small icons are 32x32 pixels and large icons are 40x40 pixels. If this variable is not set the default small icons are used.

Value can be any full path. Relative paths are not allowed.

SDDVRES

This variable is used by the Scitech Software Display Doctor for OS/2. The Display Doctor is a universal driver. Here can you set up the vertically Pels Per Meter (PPM), this is used to determine scaling between pixels and millimeter on the screen.

SET SDDVRES=<value>

Parameters:

Value can be pels per meter. If this variable is not set the SDD will compute the best value of this setting for you. Usually it is not needed to set this variable.

Value can be any full path. Relative paths are not allowed.

SHAPIEXCEPTIONHANDLER=OFF

Disable the WPS API exception handler.

SET SHAPIEXCEPTIONHANDLER=OFF 

Note: This directive seems to be an environment variable in WARP 3 with Fixpack #36 and WARP 4 with Fixpack #5. This means that you have to use the format "SET SHAPIEXCEPTIONHANDLER=OFF". On older releases it had to be only "SHAPIEXCEPTIONHANDLER=OFF"

Platform Support:

OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
* * Yes

SHELLEXCEPTIONHANDLER=OFF

Disable the WPS exception handler.

SET SHELLEXCEPTIONHANDLER=OFF  

Note: This directive seems to be an environment variable in WARP 3 with Fixpack #36 and WARP 4 with Fixpack #5. This means that you have to use the format "SET SHELLEXCEPTIONHANDLER=OFF ". On older releases it had to be only "SHELLEXCEPTIONHANDLER=OFF"

Platform Support:

OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
* * Yes

ShellHandlesINC

Increases the number of file handles.

SET ShellHandlesINC=Value

Parameter:

Value is the number of handles by which the standard number of handles per shell process are increased. With a standard of 30 handles and SET ShellHandlesINC=20, 50 file handles (30 + 20) are available to each shell process.

Value can be any integer between 0 and approximately 255, but highly dependent upon available memory.

This setting is only available beginning with Warp 4 Fixpack #6.

Platform Support:

OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
FP6+ Yes

OS/2 SOM

SMADDSTAR

SET SMADDSTAR=1

SMCLASSES

SET SMCLASSES=Wptypes.idl

SMEMIT

SET SMEMIT=H;IH;C

SMINCLUDE

Defines the directories where the special SOM header files are stored.

SET SMINCLUDE=Paths
Parameters
Paths can be any full path or any relative path. If you use more than one path, the paths must be delimited by a semicolon.

SMNOTC

SET SMNOTC=1

SMTMP

Points to a directory used to store temporary files.

SET SMTMP=<path>
Parameters
Path can be any full path.

SMG_Path

This is used by the IBM AO-Manager.

SET SMG_Path=Path 

Value can be any full path. Relative paths are not allowed.

SMG_Pl2Nlg

This is used by the IBM AO-Manager.

Value can be any full path. Relative paths are not allowed.

SYSTEM_INI

Tells the system the path and name of the System INI file. This file contains a lot of system related settings. Be careful, this is a critical system file!

SET SYSTEM_INI=C:\OS2\OS2SYS.INI

Default settings:

  • SET SYSTEM_INI=C:\OS2\OS2SYS.INI

Parameters:

Value can be any path to a valid System INI file. Value can be any full path. Relative paths are not allowed.

TCPLANG

Sets the Language for TCP/IP V4.x.

SET TCPLANG=<xx_XX>
ex: SET TCPLANG=EN_US

Platform Support:

OS/2 2.x OS/2 3.0 OS/2 4.0 OS/2 4.5x
No Yes Yes Yes

TEMP

Here you can define a directory were OS/2 and programs can store temporarily files. It is a god idea to use the same directory as used in SET Tmp. Check the directory time by time to see if there are temporally file that you can delete, because some applications forget to delete their temporally files.

SET TEMP=<path>
ex: SET TEMP=C:\var\temp

Value can be any full path. Relative paths are not allowed.

TIMESYNC

New with eCS 1.1

SET TIMESYNC=<parameter>
ex: SET TIMESYNC=0

TMP

Here you can define a directory were OS/2 and programs can store temporarily files. It is a god idea to use the same directory as used in SET Temp. Check the directory time by time to see if there are temporally file that you can delete, because some applications forget to delete their temporally files.

SET TMP=C:\Temp 

Value can be any full path. Relative paths are not allowed.

TMPDIR

Here you can define a directory were OS/2 and programs can store temporarily files. It is a god idea to use the same directory as used in SET TEMP. Check the directory time by time to see if there are temporally file that you can delete, because some applications forget to delete their temporally files.

SET TMPDIR=<path>

Example:

SET TMPDIR=C:\var\temp

Value can be any full path. Relative paths are not allowed.

  • TZ - timezone information

ULSPATH

Defines the path to the Unicode languages files.

SET ULSPATH=<path>

Example:

SET ULSPATH=C:\Language

Value can be any full path. Relative paths are not allowed.

VIO


Check also CONFIG.SYS - SET Statements (Additional software).