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You're reading from  Embedded Linux Development Using Yocto Project Cookbook. - Second Edition

Product typeBook
Published inJan 2018
Publisher
ISBN-139781788399210
Edition2nd Edition
Tools
Yocto ProjectLinux
Concepts
Embedded Systems
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Author (1)
Alex Gonzalez
Alex Gonzalez
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Alex Gonzalez

Alex González is a software engineering supervisor at Digi International and product owner of the Digi Embedded Yocto distribution. He started working professionally with embedded systems in 1999 and the Linux kernel in 2004, designing products for voice and video over IP networks, and followed his interests into machine-to-machine (M2M) technologies and the Internet of Things. Born and raised in Bilbao, Spain, Alex has an electronic engineering degree from the University of the Basque Country and he received his MSc in communication systems from the University of Portsmouth.
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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...

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Embedded Linux Development Using Yocto Project Cookbook. - Second Edition
Published in: Jan 2018Publisher: ISBN-13: 9781788399210
© 2018 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Alex Gonzalez

Alex González is a software engineering supervisor at Digi International and product owner of the Digi Embedded Yocto distribution. He started working professionally with embedded systems in 1999 and the Linux kernel in 2004, designing products for voice and video over IP networks, and followed his interests into machine-to-machine (M2M) technologies and the Internet of Things. Born and raised in Bilbao, Spain, Alex has an electronic engineering degree from the University of the Basque Country and he received his MSc in communication systems from the University of Portsmouth.
Read more about Alex Gonzalez

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