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Book: LPI Linux Certification in a Nutshell Section: Chapter 8. Exam 101 Review Questions and Exercises
8.3 Boot, Initialization, Shutdown, and Runlevels (Topic 2.6) 8.3.1 Review questions -
Name and briefly describe the two parts of LILO. Which part has a configuration file and what is that file called? -
What are the ramifications relating to new hardware when running a monolithic kernel? -
Which three runlevels are well defined across Linux distributions, and what actions to they perform? -
Describe a situation that would imply the need to switch to single-user mode. -
What are the two alphabetic prefixes used in the rd directories, and what do they stand for? -
How can you shutdown and halt a Linux system immediately using shutdown? 8.3.2 Exercises 8.3.2.1 Exercise 2.6-1. Boot -
Examine the contents of /etc/lilo.conf. How many kernel images or operating systems are configured for load by LILO? Explain the options you find in the file. -
Install the boot loader by executing lilo. What happened? -
Boot your system and manually specify the root filesystem using the root= keyword at the LILO prompt. What happens if you specify the wrong partition? -
Use dmesg and less to examine boot-time messages. Compare what you find to the latest boot messages found in /var/log/messages. -
Boot your system and use the single or 1 option to boot directly into single-user mode. 8.3.2.2 Exercise 2.6-2. Runlevels -
After booting to single-user mode, switch to your normal runlevel using init n. -
Does the system come up as expected? -
Enter init 1 to go back to single-user mode. What daemons are still running? -
Familiarize yourself with the contents of a few of the scripts in /etc/rc.d/init.d (your system directories may vary). -
Look in rc0.d through rc6.d for links to the scripts you examined. How are the scripts used? In which runlevels is the corresponding service active? -
Shut down your system with init 0. -
Shut down your system with shutdown -h now. | | |
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