LPI Linux Certification in a Nutshell, 2nd Edition

Answers

1. b. Both ps and top yield process status. None of the other listed commands are related to processes.

2. e. IDE disk drives are referred to as /dev/hd x, where x is a, b, c, or d. Partitions are numbered from 1 through 4 for primary and extended partitions and 5 through 16 for logical partitions.

3. d. The tail command is used for checking the last lines of a text file. By default, it displays 10 lines.

4. a. The !! command history expansion executes the previous command. Entering the Ctrl-P keystroke uses the Emacs key-binding bash to move up one line in the history; pressing Enter executes that command.

5. b, c, and d. fsck is a frontend for the programs that actually do the checking. e2fsck and fsck.ext2 are links to the program that checks native Linux ext2 filesystems.

6. c. df reports disk information, including a percentage of the filesystems used. Answer a is incorrect because /home may not be the only partition on the physical disk.

7. e. /var and /tmp are mainly transient, /usr is typically static (and should be easy to reinstall from the original OS media), /root is simply a home directory for root, but /etc contains system configuration information that frequently changes.

8. d. split - n outfile separates a file into multiple output files, each with n lines, and names them outfileaa, outfileab, and so on. Since the original file had 12 lines and Carolyn split it into sets of 4 lines, the result is three files named glaa, glab, and glac, each containing 4 lines.

9. c. CD-ROMs use the iso9660 ...