Installing package installation scripts

The supported package formats, .rpm, .ipk, and .deb, support the addition of installation scripts that can be run at different times during a package installation process. In this recipe, we will see how to install them.

Getting ready

There are different types of installation script:

• Pre-installation scripts (pkg_preinst): These are called before the package is unpacked
• Post-installation scripts (pkg_postinst): These are called after the package is unpacked, and dependencies will be configured
• Pre-removal scripts (pkg_prerm): These are called with installed or at least partially installed packages
• Post-removal scripts (pkg_postrm): These are called after the package's files have been removed or replaced

How to do it...

An example snippet showing the installation of a pre-installation script in a recipe is as follows:

pkg_preinst_${PN} () { 
    # Shell commands 
} 

All installation scripts work in the same way, with the exception that post-installation scripts...