Installation parameters

The following four groups of parameters are available to all installation scripts. Some of the parameters can be modified by a request script, others cannot be modified at all.

• The four system parameters that are generated by the installation software (see below for a description of these). None of these parameters can be modified by a package.

• The 21 standard installation parameters defined in the pkginfo(4) file. Of these, a package can only modify the CLASSES parameter. The standard installation parameters are described in detail in the pkginfo(4) manual page.

• You can define your own installation parameters by assigning a value to them in the pkginfo(4) file. Such a parameter must be alphanumeric with an initial capital letter. Any of these parameters can be changed by a request script.

• Your request script can define new parameters by assigning values to them and placing them into the installation environment.

PATH

Specifies the search list used by sh to find commands; PATH is set to /sbin:/usr/sbin:/usr/bin:/usr/sadm/install/bin upon script invocation.

UPDATE

Indicates that the current installation is intended to update the system. Automatically set to true if the package being installed is overwriting a version of itself.

PKGINST

Specifies the instance identifier of the package being installed. The value is equal to the package abbreviation (i.e., the same value as the PKG variable in the pkginfo file). See ``2. Defining a package instance'' for more details.)

PKGSAV

Specifies the directory where files can be saved for use by removal scripts or where previously saved files may be found.