Tested with opsi 4.0.1
Tested with opsi-winst 4.10.8 - 4.11.2.1

This is an old version of the official template for opsi-winst scripts.
For description have a look at the opsi-getting-started manual.
Do not copy&paste this script but always look for the newest version of the opsi-template product.
The opsi-template consists of 3 script files (setup.ins, uninstall.ins and delsub.ins).
The opsi-template scripts are existing in three different kinds: to install 32 bit software (setup32.ins), to install 64 bit software (setup64.ins) and to install mixed 32 bit and 64 bit software (setup3264.ins).
Here we show only the 32 bit version.

setup32.ins

; Copyright (c) uib gmbh (www.uib.de)
; This sourcecode is owned by uib
; and published under the Terms of the General Public License.
; credits: http://www.opsi.org/credits/
 
[Actions]
requiredWinstVersion >= "4.10.8.6"
 
DefVar $MsiId$
DefVar $UninstallProgram$
DefVar $LogDir$
DefVar $ProductId$  
DefVar $MinimumSpace$
DefVar $InstallDir$
DefVar $ExitCode$
DefVar $LicenseRequired$
DefVar $LicenseKey$
DefVar $LicensePool$
 
Set $LogDir$ = "%SystemDrive%\tmp"
 
; ----------------------------------------------------------------
; - Please edit the following values                             -
; ----------------------------------------------------------------
;$ProductId$ should be the name of the product in opsi
; therefore please: only lower letters, no umlauts, 
; no white space use '-' as a seperator
Set $ProductId$       = "opsi-template"
Set $MinimumSpace$    = "1 MB"
; the path were we find the product after the installation
Set $InstallDir$      = "%ProgramFiles32Dir%\<path to the product>"
Set $LicenseRequired$ = "false"
Set $LicensePool$     = "p_" + $ProductId$
; ----------------------------------------------------------------
 
if not(HasMinimumSpace ("%SystemDrive%", $MinimumSpace$))
	LogError "Not enough space on %SystemDrive%, " + $MinimumSpace$ + " on drive %SystemDrive% needed for " + $ProductId$
	isFatalError
	; Stop process and set installation status to failed
else
	comment "Show product picture"
	ShowBitmap "%ScriptPath%\" + $ProductId$ + ".png" $ProductId$
 
	if FileExists("%ScriptPath%\delsub32.ins")
		comment "Start uninstall sub section"
		Sub "%ScriptPath%\delsub32.ins"
	endif
 
	Message "Installing " + $ProductId$ + " ..."
 
	if $LicenseRequired$ = "true"
		comment "Licensing required, reserve license and get license key"
		Sub_get_licensekey
	endif
 
	comment "Start setup program"
	Winbatch_install
	Sub_check_exitcode
 
	comment "Copy files"
	Files_install /32Bit
 
	comment "Patch Registry"
	Registry_install /32Bit
 
	comment "Create shortcuts"
	LinkFolder_install
 
	comment "Test for installation success"
	; Test if software marked as installed in registry
	; if (GetRegistryStringValue32("[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}] DisplayName") = "")
	; 	logError "Fatal: After Installation 32 bit [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}] not found"
	; 	isFatalError
	; else
	; 	comment "Successful Installation"
	; endif
 
endif
 
[Winbatch_install]
; Choose one of the following examples as basis for your installation
; You can use $LicenseKey$ var to pass a license key to the installer
;
; === Nullsoft Scriptable Install System ================================================================
; "%ScriptPath%\Setup.exe" /S
;
; === MSI package =======================================================================================
; You may use the parameter PIDKEY=$Licensekey$
; msiexec /i "%ScriptPath%\some.msi" /l* "$LogDir$\$ProductId$.install_log.txt" /qb! ALLUSERS=2 REBOOT=ReallySuppress
;
; === InstallShield + MSI=====================================================================================
; Attention: The path to the log file should not contain any whitespaces
; "%ScriptPath%\setup.exe" /s /v" /l* $LogDir$\$ProductId$.install_log.txt /qb! ALLUSERS=2 REBOOT=ReallySuppress"
; "%ScriptPath%\setup.exe" /s /v" /qb! ALLUSERS=2 REBOOT=ReallySuppress"
;
; === InstallShield =====================================================================================
; Create setup.iss answer file by running: setup.exe /r /f1"c:\setup.iss"
; "%ScriptPath%\setup.exe" /s /sms /f1"%ScriptPath%\setup.iss" /f2"$LogDir$\$ProductId$.install_log.txt"
;
; === Inno Setup ========================================================================================
; http://unattended.sourceforge.net/InnoSetup_Switches_ExitCodes.html
; You may create setup answer file by: setup.exe /SAVEINF="filename"
; You may use an answer file by the parameter /LOADINF="filename"
; "%ScriptPath%\setup.exe" /sp- /silent /norestart /SUPPRESSMSGBOXES
 
[Files_install]
; Example of recursively copying some files into the installation directory:
;
; copy -s "%ScriptPath%\files\*.*" "$InstallDir$"
 
[Registry_install]
; Example of setting some values of an registry key:
;
; openkey [HKEY_LOCAL_MACHINE\Software\$ProductId$]
; set "name1" = "some string value"
; set "name2" = REG_DWORD:0001
; set "name3" = REG_BINARY:00 af 99 cd
 
[LinkFolder_install]
; Example of deleting a folder from AllUsers startmenu:
;
; set_basefolder common_programs
; delete_subfolder $ProductId$
;
; Example of creating an shortcut to the installed exe in AllUsers startmenu:
;
; set_basefolder common_programs
; set_subfolder $ProductId$
;
; set_link
; 	name: $ProductId$
; 	target: <path to the program>
; 	parameters:
; 	working_dir: $InstallDir$
; 	icon_file:
; 	icon_index:
; end_link
;
; Example of creating an shortcut to the installed exe on AllUsers desktop:
;
; set_basefolder common_desktopdirectory
; set_subfolder ""
;
; set_link
; 	name: $ProductId$
; 	target: <path to the program>
; 	parameters: <some_param>
; 	working_dir: $InstallDir$
; 	icon_file: <path to icon file>
; 	icon_index: 2
; end_link
 
[Sub_get_licensekey]
if opsiLicenseManagementEnabled
	comment "License management is enabled and will be used"
 
	comment "Trying to get a license key"
	Set $LicenseKey$ = demandLicenseKey ($LicensePool$)
	; If there is an assignment of exactly one licensepool to the product the following call is possible:
	; Set $LicenseKey$ = demandLicenseKey ("", $ProductId$)
	;
	; If there is an assignment of a license pool to a windows software id, it is possible to use:
	; DefVar $WindowsSoftwareId$
	; $WindowsSoftwareId$ = "..."
	; Set $LicenseKey$ = demandLicenseKey ("", "", $WindowsSoftwareId$)
 
	DefVar $ServiceErrorClass$
	set $ServiceErrorClass$ = getLastServiceErrorClass
	comment "Error class: " + $ServiceErrorClass$
 
	if $ServiceErrorClass$ = "None"
		comment "Everything fine, we got the license key '" + $LicenseKey$ + "'"
	else
		if $ServiceErrorClass$ = "LicenseConfigurationError"
			LogError "Fatal: license configuration must be corrected"
			LogError getLastServiceErrorMessage
			isFatalError
		else 
			if $ServiceErrorClass$ = "LicenseMissingError"
				LogError "Fatal: required license is not supplied"
				isFatalError
			endif
		endif
	endif
else
	LogError "Fatal: license required, but license management not enabled"
	isFatalError
endif
 
 
[Sub_check_exitcode]
comment "Test for installation success via exit code"
set $ExitCode$ = getLastExitCode
; informations to exit codes see
; http://msdn.microsoft.com/en-us/library/aa372835(VS.85).aspx
; http://msdn.microsoft.com/en-us/library/aa368542.aspx
if ($ExitCode$ = "0")
	comment "Looks good: setup program gives exitcode zero"
else
	comment "Setup program gives a exitcode unequal zero: " + $ExitCode$
	if ($ExitCode$ = "1605")
		comment "ERROR_UNKNOWN_PRODUCT	1605	This action is only valid for products that are currently installed."
		comment "Uninstall of a not installed product failed - no problem"
	else
		if ($ExitCode$ = "1641")
			comment "looks good: setup program gives exitcode 1641"
			comment "ERROR_SUCCESS_REBOOT_INITIATED	1641	The installer has initiated a restart. This message is indicative of a success."
		else
			if ($ExitCode$ = "3010")
				comment "looks good: setup program gives exitcode 3010"
				comment "ERROR_SUCCESS_REBOOT_REQUIRED	3010	A restart is required to complete the install. This message is indicative of a success."
			else
				logError "Fatal: Setup program gives an unknown exitcode unequal zero: " + $ExitCode$
				isFatalError
			endif
		endif
	endif
endif

delsub32.ins

; Copyright (c) uib gmbh (www.uib.de)
; This sourcecode is owned by uib gmbh
; and published under the Terms of the General Public License.
; credits: http://www.opsi.org/credits/
 
 
Set $MsiId$ = '{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}'
Set $UninstallProgram$ = $InstallDir$ + "\uninstall.exe"
 
Message "Uninstalling " + $ProductId$ + " ..."
 
if FileExists($UninstallProgram$)
	comment "Uninstall program found, starting uninstall"
	Winbatch_uninstall
	sub_check_exitcode
endif
if not (GetRegistryStringValue32("[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\" + $MsiId$ + "] DisplayName") = "")
	comment "MSI id " + $MsiId$ + " found in registry, starting msiexec to uninstall"
	Winbatch_uninstall_msi
	sub_check_exitcode
endif
 
comment "Delete files"
Files_uninstall /32Bit
 
comment "Cleanup registry"
Registry_uninstall /32Bit
 
comment "Delete program shortcuts"
LinkFolder_uninstall
 
[Winbatch_uninstall]
; Choose one of the following examples as basis for program uninstall
;
; === Nullsoft Scriptable Install System ================================================================
; "$UninstallProgram$" /S
;
; === Inno Setup ========================================================================================
; "$UninstallProgram$" /silent /norestart /SUPPRESSMSGBOXES
 
 
[Winbatch_uninstall_msi]
msiexec /x $MsiId$ /qb! REBOOT=ReallySuppress
 
[Files_uninstall]
; Example for recursively deleting the installation directory (don't forget the trailing backslash):
;
; delete -sf "$InstallDir$\"
 
[Registry_uninstall]
; Example of deleting a registry key:
;
; deletekey [HKEY_LOCAL_MACHINE\Software\$ProductId$]
 
[LinkFolder_uninstall]
; Example of deleting a folder from AllUsers startmenu:
;
; set_basefolder common_programs
; delete_subfolder $ProductId$
;
; Example of deleting a shortcut from AllUsers desktop:
;
; set_basefolder common_desktopdirectory
; set_subfolder ""
; delete_element $ProductId$
 
[Sub_check_exitcode]
comment "Test for installation success via exit code"
set $ExitCode$ = getLastExitCode
; informations to exit codes see
; http://msdn.microsoft.com/en-us/library/aa372835(VS.85).aspx
; http://msdn.microsoft.com/en-us/library/aa368542.aspx
if ($ExitCode$ = "0")
	comment "Looks good: setup program gives exitcode zero"
else
	comment "Setup program gives a exitcode unequal zero: " + $ExitCode$
	if ($ExitCode$ = "1605")
		comment "ERROR_UNKNOWN_PRODUCT	1605	This action is only valid for products that are currently installed."
		comment "Uninstall of a not installed product failed - no problem"
	else
		if ($ExitCode$ = "1641")
			comment "looks good: setup program gives exitcode 1641"
			comment "ERROR_SUCCESS_REBOOT_INITIATED	1641	The installer has initiated a restart. This message is indicative of a success."
		else
			if ($ExitCode$ = "3010")
				comment "looks good: setup program gives exitcode 3010"
				comment "ERROR_SUCCESS_REBOOT_REQUIRED	3010	A restart is required to complete the install. This message is indicative of a success."
			else
				logError "Fatal: Setup program gives an unknown exitcode unequal zero: " + $ExitCode$
				isFatalError
			endif
		endif
	endif
endif

uninstall32.ins

; Copyright (c) uib gmbh (www.uib.de)
; This sourcecode is owned by uib gmbh
; and published under the Terms of the General Public License.
; credits: http://www.opsi.org/credits/
 
[Actions]
requiredWinstVersion >= "4.10.8.6"
 
DefVar $MsiId$
DefVar $UninstallProgram$
DefVar $LogDir$
DefVar $ExitCode$
DefVar $ProductId$
DefVar $InstallDir$
DefVar $LicenseRequired$
DefVar $LicensePool$
 
Set $LogDir$ = "%SystemDrive%\tmp"
 
; ----------------------------------------------------------------
; - Please edit the following values                             -
; ----------------------------------------------------------------
Set $ProductId$       = "opsi-template"
Set $InstallDir$      = "%ProgramFiles32Dir%\<path to the product>"
Set $LicenseRequired$ = "false"
Set $LicensePool$     = "p_" + $ProductId$
; ----------------------------------------------------------------
 
 
comment "Show product picture"
ShowBitmap "%ScriptPath%\" + $ProductId$ + ".png" $ProductId$
 
Message "Uninstalling " + $ProductId$ + " ..."
 
if FileExists("%ScriptPath%\delsub32.ins")
	comment "Start uninstall sub section"
	Sub "%ScriptPath%\delsub32.ins"
endif
 
if $LicenseRequired$ = "true"
	comment "Licensing required, free license used"
	Sub_free_license
endif
 
[Sub_free_license]
comment "License management is enabled and will be used"
 
comment "Trying to free license used for the product"
DefVar $result$
Set $result$ = FreeLicense($LicensePool$)
; If there is an assignment of a license pool to the product, it is possible to use
; Set $result$ = FreeLicense("", $ProductId$)
;
; If there is an assignment of a license pool to a windows software id, it is possible to use
; DefVar $WindowsSoftwareId$
; $WindowsSoftwareId$ = "..."
; set $result$ = FreeLicense("", "", $WindowsSoftwareId$)

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