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Before you start
Learn what these tutorials can teach you and how you can get the most from them.
The Linux Professional Institute (LPI) certifies Linux system administrators at junior and intermediate levels. To attain each level of certification, you must pass two LPI exams.
Each exam covers several topics, and each topic has a weight. The weights indicate the relative importance of each topic. Very roughly, expect more questions on the exam for topics with higher weight. The topics and their weights for LPI exam 201 are:
- Topic 201
- Linux kernel (weight 5).
- Topic 202
- System startup (weight 5). The focus of this tutorial.
- Topic 203
- File systems (weight 10).
- Topic 204
- Hardware (weight 8).
- Topic 209
- File and service sharing (weight 8).
- Topic 211
- System maintenance (weight 4).
- Topic 213
- System customization and automation (weight 3).
- Topic 214
- Troubleshooting (weight 6).
The Linux Professional Institute does not endorse any third-party exam preparation material or techniques in particular. For details, please contact info@lpi.org.
Welcome to "System startup," the second of eight tutorials designed to prepare you for LPI exam 201. In this tutorial, you will learn the steps a Linux system goes through during system initialization and how to modify and customize those behaviors for your specific needs.
The tutorial is organized according to the LPI objectives for this topic, as follows:
- 2.201.1 Customizing system startup and boot processes (weight 2)
- You will learn to edit appropriate system startup scripts to customize standard system run levels and boot processes. This objective includes interacting with run levels and creating custom
initrdimages as needed. - 2.201.2 System recovery (weight 3)
- You will be able to properly manipulate a Linux system during the boot process and during recovery mode. This objective includes using both the
initutility andinit= kerneloptions.
This tutorial is at the border of Linux, strictly speaking. The previous tutorial (on topic 201) addressed the kernel, which is the core of Linux. This tutorial moves on to the ancillary tools and scripts that are necessary to get the kernel running and to initialize a system to the point where it does something meaningful. Note that the scripts and tools associated with initialization are maintained by the creators of Linux distributions or individualized by system administrators rather than developed as part of the Linux kernel per se. Still, every Linux system -- even an embedded one -- requires some basic initialization steps. We'll review those steps here.
In later tutorials, we'll look at a variety of tools for networking, system maintenance, manipulating files and data, and so on, which are important for a working Linux installation and part of almost every Linux distribution, but are even less part of Linux per se than are initialization scripts.
To get the most from this tutorial, you should already have a basic knowledge of Linux and a working Linux system on which you can practice the commands covered in this tutorial.
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