HP OpenVMS Systems Documentation

POLYCENTER Software Installation Utility Developer's Guide

The remove portion specifies commands to execute when the product is removed. These commands are run before any product material is deleted from the target disk. The EXECUTE...REMOVE statement has no effect when the product is upgraded. To execute commands when the product is upgraded by another version of the product, use the EXECUTE UPGRADE statement.

You specify the install and remove actions to perform by including one or more DCL command lines in the EXECUTE INSTALL...REMOVE statement. These commands are passed for execution to the DCL interpreter running in a subprocess. Enclose each action, whether specified as a single DCL command or a command procedure, in double quotes (" "). If more than one action is given, use parentheses to enclose the list.

If you want your commands to prompt the user and accept the user's input, specify the EXECUTE INSTALL...REMOVE statement with the INTERACTIVE option. The INTERACTIVE option causes all output from DCL to be displayed, unless you prevent it. In contrast, when the INTERACTIVE option is not specified, output generated by DCL commands is displayed only for lines that are interpreted as DCL messages, that is, those beginning with a percent sign (%) in column one.

If you need files for the EXECUTE INSTALL statement, specify them in the USES option or in separate FILE statements. However, if you need files for the EXECUTE REMOVE statement, you must provide them with FILE statements so that they are available on the user's system for use when the product is removed. Each file you specify with the USES option must be present in the product material.

Note that the USES option will not cause the listed files to be placed permanently in your file system. As soon as the installation operation completes, the files listed with the USES option are deleted. For this reason, you must use the FILE statement for this execute operation, and any other operation, in which you want your execute command procedures placed permanently in your file system.

The EXECUTE INSTALL...REMOVE statement causes the utility to define logical names for use by the subprocess that executes the specified commands. The commands should use these logical names to reference files, as follows:

• PCSI$SOURCE is a subdirectory in the root format under the user's login directory that points to the location of the files specified by the USES option. This logical name is defined for the subprocess in which product-supplied commands execute. It is not the same PCSI$SOURCE logical name that can be defined by a user, in the user's process, pointing to the location of a product kit.

  Note The PCSI$SOURCE logical name is available only for the EXECUTE INSTALL operation. You cannot use it for an EXECUTE REMOVE operation.

• PCSI$DESTINATION is a root directory specification that points to the root directory for the current scope where product material will be placed.
• PCSI$SCRATCH is a subdirectory under the user's login directory that can be used by commands for temporary working space. This directory and any files placed in it are automatically deleted at the end of the operation.

The EXECUTE INSTALL...REMOVE statement is a utility directive and does not specify a managed object. See Also Section 6.1
EXECUTE ABORT
FILE

Example

file [SYSUPD]UNLOAD_LOADABLE_IMAGE.COM ;
execute
   install "@PCSI$SOURCE:[SYSUPD]LOAD_LOADABLE_IMAGE.COM"
   remove "@PCSI$DESTINATION:[SYSUPD]UNLOAD_LOADABLE_IMAGE.COM"
   uses ([SYSUPD]LOAD_LOADABLE_IMAGE.COM) ;
      

In this example, the EXECUTE INSTALL...REMOVE statement sets up command procedures to run when the product is installed and removed. The USES option specifies the file name of the command procedure for use on installation of the product. The file is deleted after use. The FILE statement specifies the file name of the command procedure for use on removal of the product. This file is placed in the user's destination directory tree during installation and executed during removal.

The EXECUTE LOGIN statement displays a message when the product is installed or reconfigured, informing the installer that the specified commands need to be added to the login command procedure of every user of this product.

Syntax

Parameter

(command,...)

Indicates the commands that the utility displays in a message to the user.

Description

The EXECUTE LOGIN statement displays a message when the product is installed or reconfigured, advising the installer that the specified commands need to be added to the login command procedure of every user of this product. The specified commands are not run during the installation or reconfiguration operation. The message is displayed after the operation has completed successfully.

The EXECUTE LOGIN statement is a utility directive and does not specify a managed object.

Example

execute login "$ @USER_START" ;

      

In this example, the EXECUTE LOGIN statement displays the following message to users:

Users of this product require the following lines in their login procedure:
    $ @USER_START
      

The EXECUTE POSTINSTALL statement specifies commands to execute when the product is installed or reconfigured. These commands are run after any commands from EXECUTE INSTALL... and EXECUTE START... statements are run.

Syntax

Parameter

(command,...)

Indicates the command that the utility passes to the command interpreter in the execution environment.

Options

INTERACTIVE

Allows communication between the user and the specified command or command procedure executing in a subprocess.

USES (file,...)

Indicates the files required to execute the commands you specified in the command parameter. Use a separate FILE statement to specify required files that are permanently placed in the user's destination directory tree; use the USES option to specify required files that are placed in a temporary directory and deleted after use. By default, this statement does not require files.

Description

The EXECUTE POSTINSTALL statement specifies commands to execute when the product is installed or reconfigured. These commands are run after any commands from EXECUTE INSTALL... and EXECUTE START... statements are run.

You specify actions to perform by including one or more DCL command lines in the EXECUTE POSTINSTALL statement. These commands are passed for execution to the DCL interpreter running in a subprocess. Enclose each action, whether specified as a single DCL command or a command procedure, in double
quotes (" "). If more than one action is given, use parentheses to enclose the list.

If you want your commands to prompt the user and accept the user's input, specify the EXECUTE POSTINSTALL statement with the INTERACTIVE option. The INTERACTIVE option causes all output from DCL to be displayed, unless you prevent it. In contrast, when the INTERACTIVE option is not specified, output generated by DCL commands is displayed only for lines that are interpreted as DCL messages, that is, those beginning with a percent sign (%) in column one.

If you need files for the EXECUTE POSTINSTALL statement, specify them in the USES option or in separate FILE statements. Each file you specify with the USES option must be present in the product material.

Note that the USES option will not cause the listed files to be placed permanently in your file system. As soon as the installation operation completes, the files listed with the USES option are deleted. For this reason, you must use the FILE statement for this execute operation, and any other operation, in which you want your execute command procedures placed permanently in your file system.

The EXECUTE POSTINSTALL statement causes the POLYCENTER Software Installation utility to define logical names for use by the subprocess that executes the specified commands. The commands should use these logical names to reference files, as follows:

• PCSI$SOURCE is a subdirectory in the root format under the user's login directory that points to the location of the files specified by the USES option. This logical name is defined for the subprocess in which product-supplied commands execute. It is not the same PCSI$SOURCE logical name that can be defined by a user, in the user's process, pointing to the location of a product kit.
• PCSI$DESTINATION is a root directory specification that points to the root directory for the current scope where product material will be placed.
• PCSI$SCRATCH is a subdirectory under the user's login directory that can be used by commands for temporary working space. This directory and any files placed in it are automatically deleted at the end of the operation.

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