Topic5: New Questions Mix

Question 1

Abuelas House on Atlantic Avenue

Question 2

1: Stair Landing

file name c.txt be created with same indode number as a.txt

Answer 2

ln a.txt c.txt

Question 3

2: Door to Julios Room

output displayed when user fred executes echo ‘fred $USER’

Answer 3

fred fred

Question 4

3: Julios Room Closet

files exist in standard GRUB 2 install.

Answer 4

/boot/grub/i386-pc/1vm.mod

/boot/grub/linux/vmlinuz

Question 5

4: Julios Room Bed

faulty kernel module causing issues with nic card - what action ensures that module is not loaded automatically when system boots

Answer 5

adding blacklist line including the name of the offending module to the file /etc/modprobe.d/blacklist.conf

Question 6

5: Julios Room Dresser

command installs GRUB 2 into MBR on third hard disk

Answer 6

grub-install /dev/sdc

Question 7

6: Julios Room Radiator

command installs all packages with name ending with string foo

Answer 7

zypper install “*foo”

Question 8

7: Abuela’s bedroom windows

cmd prints list of usernames (1st column) and primary group (4th column) from /etc/password file

Answer 8

cut -d: -f 1,4 /etc/passwd

Question 9

8: Abuelas Room bed

true when a file system is not listed in /etc/fstab nor known to system and is mounted manually

Answer 9

cmd systemctl mountsync can be used to create a mount unit based on the existing mount.

Question 10

9: Abuela Room Sowing Machine

directories on 64 bit Linux system typically contain shared libraries

Answer 10

/usr/lib64/

/lib64/

Question 11

10: Abuela’s Room Chairs

cmd must be entered before exiting vi to save the current file as filea.txt

Answer 11

:w filea.txt

Question 12

11: Abuelas Room Bureau

program runs a command in specific intervals and refreshes the display of the program’s output

Answer 12

watch

Question 13

12: Abuelas Room Mirror

true about boot sequence of PC using BIOS

Answer 13

some parts of boot process configured from BIOS

BIOS initiates boot process after turning the computer on

Question 14

13: Middle Room Closet

given loga.log with timestamps of the format DD/MM/YYY:hh:mm:ss - which command filters out all log entries in the time period between 8:00 am and 8:59 am

Answer 14

grep -E ‘:08:[0-9]+:[0-9]+’ loga.log

Question 15

14: Middle Room Liquor Cabinet

true regarding the command ls > files if it does not exist

Answer 15

The files is created and contains the output of ls

Question 16

15: Middle Room Couch

contained on EFI System Partition

Answer 16

First Stage Boot Loader

Question 17

16: Middle Room Otoman

when is content of Kernel Ring Buffer reset

Answer 17

kernel ring buffer is explicitly reset using the command dmesg –clear

When the system is shut down or rebooted

Question 18

17: Middle Room Desk

when redirecting output of find to xargs cmd what option to find is useful if filename contains spaces

Answer 18

-print0

Question 19

18: Kitchen Counters

first program the Linux kernel starts at boot time when using System V init

Answer 19

/sbin/init

Question 20

19: Kitchen Table

redirection operators within Bash

Answer 20

<

2>&1

Question 21

20: Kitchen Chairs

command lists the dependencies of the RPM packages file foo.rpm

Answer 21

rpm -qpR foo.rpm

Question 22

21: Kitchen Windows

apt-get subcommands install newest versions of all currently installed packages

Answer 22

update

Question 23

22: Fire Escape

displays current disk usage for all mounted file systems

Answer 23

du

Question 24

23: Kitchen Radiators

cmd uninstalls a package but keeps is config files in case package is reinstalled

Answer 24

dpkg -r pkgname

Question 25

24: Bathroom Cabinet cmd mount --bind do

Answer 25

makes contents of one directory available in another directory

Question 26

25: Bathroom Tub default percentage of reserved space for root user on new ext4 filesystems

Answer 26

5%

Question 27

26: Bathroom Shower Head daemon handles power management envents on linux system

Answer 27

acpid

Question 28

27: Bathroom Toilet consider directory drwxrwxr-x 2 root sales 4096 Jan 1 15:21 sales cmd ensures new files created with directory sales are owned by the group sales

Answer 28

chgrp -p sales sales chmod 2775 sales

Question 29

28: Bathroom Sink cmd displays path to executable file that would be executed when cmd foo is invoked

Answer 29

lsattr foo

Question 30

29: Kitchen Oven given input stream txt1.txt atxt.txt txtB.txt which reg expressions turns input stream into the following output stream txt1.bak.txt atxt.bak.txt txtB.bak.txt

Answer 30

s/txt/bak.txt/

Question 31

30: Kitchen Microven cmd changes all CR-LF breaks in text file userlist.txt to Linux standard LF line breaks and stores the result in newlist.txt

Answer 31

tr -d '\r' < userlist.txt > newlist.txt

Question 32

32: Kitchen Sink normal mode invi what character can be used to begin a reverse search of the text

Answer 32

?

Question 33

33: Kitchen Cabinet under sink chown cmd will change ownership to dave and the group to staff on a file named data.txt

Answer 33

chown dave:staff data.txt

Question 34

33: Kitchen Santaria Display in order to display all currently mounted filesystems which commands could be used

Answer 34

cat /proc/self/mounts mount

Question 35

34: Kitchen Small Table (next to door) what does the cmd mount -a do

Answer 35

mounts all filesystems listed in /etc/fstab that have the option to auto set

Question 36

34: Kitchen Door to Landing in vi editor what cmd will copy but not paste from current line at the cursor and the following 16 lines (17 total)

Answer 36

17yy

Question 37

35: Landing Proper outside of Kitchen cmd show definition of a given shell command

Answer 37

type

Question 38

36: Bannister cmds used to search for executable file foo when it has been placed in a directory not included in $PATH

Answer 38

find

Question 39

37: Steps cmd print current working directory when using Bash shell

Answer 39

pwd

Question 40

38: First floor landing following filesystem hierarch standard where should binaries that have been compiled by the sys admin be placed in order to be made available to all users on the system

Answer 40

/usr/local/bin/

Question 41

39: Front Door cmd changes ownership of file.txt to the user dan and the group staff

Answer 41

chown dan:staff file.tt

Question 42

40: Iron Grated Door State describes a diff between GNU GRUB Legacy and GRUB 2

Answer 42

Partition numbers start at 0 in Grub Legacy and numbers start at 1 for Grub2

Question 43

41: Taxi Stand cmd used to start another command with a given nice level

Answer 43

nice

Question 44

42: Akeos hat Store

Question 45

43: